Annual report pursuant to Section 13 and 15(d)

PRODUCT WARRANTY LIABILITY (Details)

v2.4.1.9
PRODUCT WARRANTY LIABILITY (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Product Warranty Liability:    
Balance, beginning of year $ 1,129us-gaap_ProductWarrantyAccrual $ 1,088us-gaap_ProductWarrantyAccrual
Provision for warranties issued 411us-gaap_StandardProductWarrantyAccrualWarrantiesIssued 431us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
Deferred revenue on extended warranty contracts sold 263us-gaap_DeferredRevenueAdditions 189us-gaap_DeferredRevenueAdditions
Payments (404)us-gaap_ProductWarrantyAccrualPayments (427)us-gaap_ProductWarrantyAccrualPayments
Amortization of deferred revenue on extended warranty contracts (148)us-gaap_DeferredRevenueRevenueRecognized (115)us-gaap_DeferredRevenueRevenueRecognized
Changes in estimates for pre-existing warranties 41us-gaap_ExtendedProductWarrantyAccrualPreexistingIncreaseDecrease (35)us-gaap_ExtendedProductWarrantyAccrualPreexistingIncreaseDecrease
Foreign currency translation (9)us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease (2)us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease
Balance, end of period 1,283us-gaap_ProductWarrantyAccrual 1,129us-gaap_ProductWarrantyAccrual
Product Warranty Liability    
Deferred revenue related to extended coverage programs, Current portion 401us-gaap_DeferredRevenueCurrent 285us-gaap_DeferredRevenueCurrent
Deferred revenue related to extended coverage programs, Noncurrent portion 513us-gaap_DeferredRevenueNoncurrent 414us-gaap_DeferredRevenueNoncurrent
Total deferred revenue related to extended coverage programs 608cmi_DeferredRevenueExtendedCoveragePrograms 494cmi_DeferredRevenueExtendedCoveragePrograms
Total receivables related to estimated supplier recoveries 16cmi_ReceivableForSupplierRecoveries 10cmi_ReceivableForSupplierRecoveries
Long-term portion of warranty liability 312us-gaap_ProductWarrantyAccrualNoncurrent 275us-gaap_ProductWarrantyAccrualNoncurrent
Deferred Revenue    
Product Warranty Liability    
Deferred revenue related to extended coverage programs, Current portion 170us-gaap_DeferredRevenueCurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_DeferredRevenueMember
145us-gaap_DeferredRevenueCurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_DeferredRevenueMember
Other liabilities and deferred revenue    
Product Warranty Liability    
Deferred revenue related to extended coverage programs, Noncurrent portion 438us-gaap_DeferredRevenueNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_OtherLiabilitiesAndDeferredRevenueMember
349us-gaap_DeferredRevenueNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_OtherLiabilitiesAndDeferredRevenueMember
Long-term portion of warranty liability 312us-gaap_ProductWarrantyAccrualNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_OtherLiabilitiesAndDeferredRevenueMember
275us-gaap_ProductWarrantyAccrualNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_OtherLiabilitiesAndDeferredRevenueMember
Trade and other receivables    
Product Warranty Liability    
Receivables related to estimated supplier recoveries, Current portion 12cmi_ReceivableForSupplierRecoveriesReportedCurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_TradeAndOtherReceivablesMember
5cmi_ReceivableForSupplierRecoveriesReportedCurrent
/ us-gaap_BalanceSheetLocationAxis
= cmi_TradeAndOtherReceivablesMember
Other assets    
Product Warranty Liability    
Receivables related to estimated supplier recoveries, Long-term portion $ 4cmi_ReceivableForSupplierRecoveriesReportedNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember
$ 5cmi_ReceivableForSupplierRecoveriesReportedNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherAssetsMember