Quarterly report pursuant to Section 13 or 15(d)

DEBT (Details)

v2.4.1.9
DEBT (Details) (USD $)
In Millions, unless otherwise specified
Mar. 29, 2015
Dec. 31, 2014
Long-term debt    
Unamortized discount $ (47)us-gaap_DebtInstrumentUnamortizedDiscount $ (47)us-gaap_DebtInstrumentUnamortizedDiscount
Fair value adjustment due to hedge on indebtedness 73us-gaap_DeferredGainLossOnDiscontinuationOfFairValueHedge 65us-gaap_DeferredGainLossOnDiscontinuationOfFairValueHedge
Capital leases 82us-gaap_CapitalLeaseObligationsNoncurrent 87us-gaap_CapitalLeaseObligationsNoncurrent
Total long-term debt 1,635us-gaap_DebtAndCapitalLeaseObligations 1,612us-gaap_DebtAndCapitalLeaseObligations
Less: Current maturities of long-term debt (33)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent (23)us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent
Long-term debt 1,602us-gaap_LongTermDebtAndCapitalLeaseObligations 1,589us-gaap_LongTermDebtAndCapitalLeaseObligations
Principal payments required on long-term debt    
2015 25us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear  
2016 39us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths  
2017 15us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo  
2018 16us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree  
2019 11us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour  
Fair value    
Fair value of total debt 2,043us-gaap_LongTermDebtFairValue [1] 1,993us-gaap_LongTermDebtFairValue [1]
Carrying value of total debt 1,706us-gaap_DebtInstrumentCarryingAmount 1,698us-gaap_DebtInstrumentCarryingAmount
Senior notes, 3.65%, due 2023    
Long-term debt    
Long-term debt facilities 500us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes3.65PercentDue2023Member
500us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes3.65PercentDue2023Member
Debt instrument interest rate (as a percent) 3.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes3.65PercentDue2023Member
 
Debentures, 6.75%, due 2027    
Long-term debt    
Long-term debt facilities 58us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures6.75PercentDue2027Member
58us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures6.75PercentDue2027Member
Debt instrument interest rate (as a percent) 6.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures6.75PercentDue2027Member
 
Debentures, 7.125%, due 2028    
Long-term debt    
Long-term debt facilities 250us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures7.125PercentDue2028Member
250us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures7.125PercentDue2028Member
Debt instrument interest rate (as a percent) 7.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures7.125PercentDue2028Member
 
Senior notes, 4.875%, due 2043    
Long-term debt    
Long-term debt facilities 500us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes4.875PercentDue2043Member
500us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes4.875PercentDue2043Member
Debt instrument interest rate (as a percent) 4.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cmi_SeniorNotes4.875PercentDue2043Member
 
Debentures, 5.65%, due 2098 (effective interest rate 7.48%)    
Long-term debt    
Long-term debt facilities 165us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures5.65PercentDue2098Member
165us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures5.65PercentDue2098Member
Debt instrument interest rate (as a percent) 5.65%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures5.65PercentDue2098Member
 
Effective interest rate (as a percent) 7.48%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= cmi_Debentures5.65PercentDue2098Member
 
Credit facilities related to consolidated joint ventures    
Long-term debt    
Long-term debt facilities 3us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_CreditFacilityRelatedToJointVenturesMember
3us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_CreditFacilityRelatedToJointVenturesMember
Other long-term debt    
Long-term debt    
Long-term debt facilities $ 51us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_OtherLongTermDebtMember
$ 31us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= cmi_OtherLongTermDebtMember
[1] The fair value of debt is derived from Level 2 inputs.