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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, 2013
Product Warranties Disclosures [Abstract]  
Beginning Balance $ 194
Net provisions for warranties issued during the year 18
Amounts incurred (23)
Currency translation adjustments and other (1)
Ending Balance $ 188