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Accrued Liabilities - Changes in Carrying Amount of Service and Product Warranties (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Product Warranties Disclosures [Abstract]  
Beginning Balance $ 272us-gaap_StandardProductWarrantyAccrualCurrent
Net provisions for warranties issued during the year 27us-gaap_StandardProductWarrantyAccrualWarrantiesIssued
Amounts incurred (13)us-gaap_StandardProductWarrantyAccrualPayments
Currency translation adjustments and other (2)us-gaap_StandardProductWarrantyAccrualCurrencyTranslationIncreaseDecrease
Ending Balance $ 284us-gaap_StandardProductWarrantyAccrualCurrent