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INCOME TAXES (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Income before income taxes: | |||
| U.S. income | $ 1,407,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | $ 1,058,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic | $ 998,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic |
| Foreign income | 1,027,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign | 1,061,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign | 1,273,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign |
| INCOME BEFORE INCOME TAXES | 2,434,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 2,119,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 2,271,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest |
| Current: | |||
| U.S. federal and state | 470,000,000cmi_CurrentFederalAndStateTaxExpenseBenefit | 239,000,000cmi_CurrentFederalAndStateTaxExpenseBenefit | 118,000,000cmi_CurrentFederalAndStateTaxExpenseBenefit |
| Foreign | 197,000,000us-gaap_CurrentForeignTaxExpenseBenefit | 192,000,000us-gaap_CurrentForeignTaxExpenseBenefit | 299,000,000us-gaap_CurrentForeignTaxExpenseBenefit |
| Total current | 667,000,000us-gaap_CurrentIncomeTaxExpenseBenefit | 431,000,000us-gaap_CurrentIncomeTaxExpenseBenefit | 417,000,000us-gaap_CurrentIncomeTaxExpenseBenefit |
| Deferred: | |||
| U.S. federal and state | 39,000,000cmi_DeferredFederalAndStateIncomeTaxExpenseBenefit | 67,000,000cmi_DeferredFederalAndStateIncomeTaxExpenseBenefit | 108,000,000cmi_DeferredFederalAndStateIncomeTaxExpenseBenefit |
| Foreign | (8,000,000)us-gaap_DeferredForeignIncomeTaxExpenseBenefit | 33,000,000us-gaap_DeferredForeignIncomeTaxExpenseBenefit | 8,000,000us-gaap_DeferredForeignIncomeTaxExpenseBenefit |
| Total deferred | 31,000,000us-gaap_DeferredIncomeTaxExpenseBenefit | 100,000,000us-gaap_DeferredIncomeTaxExpenseBenefit | 116,000,000us-gaap_DeferredIncomeTaxExpenseBenefit |
| Income tax expense | 698,000,000us-gaap_IncomeTaxExpenseBenefit | 531,000,000us-gaap_IncomeTaxExpenseBenefit | 533,000,000us-gaap_IncomeTaxExpenseBenefit |
| Reconciliation of the income tax provision | |||
| Statutory U.S. federal income tax rate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate |
| State income tax, net of federal effect | 1.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 1.00%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes |
| Differences in rates and taxability of foreign subsidiaries and joint ventures | (5.70%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (6.00%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (12.10%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential |
| Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent | (1.50%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch | (3.70%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch | (0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch |
| Other, net | (0.20%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (0.40%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments |
| Effective Income Tax Rate Reconciliation, Percent | 28.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 25.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 23.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations |
| Income Tax Reconciliation, Increase (Decrease) in Effective Income Tax Rate, Percent | 3.60%cmi_IncomeTaxReconciliationIncreaseDecreaseinEffectiveIncomeTaxRatePercent | ||
| EffectiveIncomeTaxRateReconciliationTaxCreditsResearchVariance | 1.20%cmi_EffectiveIncomeTaxRateReconciliationTaxCreditsResearchVariance | ||
| Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent | 2.40%us-gaap_EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent | ||
| Income tax disclosures | |||
| Release of U.S. deferred tax liabilities | 12,000,000us-gaap_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability | ||
| Permanently reinvested retained earnings | 3,800,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries | 3,100,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries | 2,300,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries |
| U.S. deferred tax liability | 204,000,000us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings | 201,000,000us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings | |
| Income (Loss) from Equity Method Investments - Foreign | 212,000,000cmi_IncomeLossfromEquityMethodInvestmentsForeign | 203,000,000cmi_IncomeLossfromEquityMethodInvestmentsForeign | 192,000,000cmi_IncomeLossfromEquityMethodInvestmentsForeign |
| China | |||
| Income tax disclosures | |||
| U.S. deferred tax liability |
155,000,000us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings / us-gaap_IncomeTaxAuthorityAxis = country_CN |
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| Retained earnings and related cumulative translation adjustments in China operations |
$ 661,000,000us-gaap_RetainedEarningsUndistributedEarningsFromEquityMethodInvestees / us-gaap_IncomeTaxAuthorityAxis = country_CN |
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| Maximum period for foreign earnings to be distributed | 5 years | ||
| X | ||||||||||
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- Definition
The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of federal, state and local tax law to relevant amounts of taxable income (loss) from continuing operations. No definition available.
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- Definition
The component of total income tax expense for the period comprised of the net change during the period in the entity's domestic, state and local deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the applicable enacted tax laws. No definition available.
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- Definition
Represents the maximum estimated period until the undistributed earnings of subsidiaries and other recognized entities in countries outside the country of domicile will be distributed into the country of domicile. No definition available.
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- Definition
EffectiveIncomeTaxRateReconciliationTaxCreditsResearchVariance No definition available.
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- Definition
This item represents the entity's proportionate share for the period of the foreign net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. No definition available.
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- Details
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- Definition
Income Tax Reconciliation, Increase (Decrease) in Effective Income Tax Rate, Percent No definition available.
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| X | ||||||||||
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- Definition
Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiaries and other recognized entities not within the country of domicile of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Percentage of the difference, between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, that is attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority interest income (expense), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, change in enacted tax rate, prior year income taxes, change in deferred tax asset valuation allowance, and other adjustments. No definition available.
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| X | ||||||||||
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of income tax expense (benefit) from continuing operations attributable to an adjustment of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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