Derivative Instruments and Hedging Activities - Fair Values of Outstanding Derivative Instruments (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Assets
Derivative Assets	$ 163	$ 66
Derivative designated as hedges
Derivative Assets
Derivative Assets	149	50
Derivative Liabilities
Derivative Liabilities	15	99
Derivative not designated as hedges
Derivative Assets
Derivative Assets	14	16
Derivative Liabilities
Derivative Liabilities	17	102
Foreign exchange contracts
Derivative Assets
Derivative Assets	50	36	(8)
Foreign exchange contracts | Derivative designated as hedges | Other current assets
Derivative Assets
Derivative Assets	98	26
Foreign exchange contracts | Derivative designated as hedges | Other Assets
Derivative Assets
Derivative Assets	24	22
Foreign exchange contracts | Derivative designated as hedges | Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	14	80
Foreign exchange contracts | Derivative designated as hedges | Other Liabilities
Derivative Liabilities
Derivative Liabilities	1	19
Foreign exchange contracts | Derivative not designated as hedges | Other current assets
Derivative Assets
Derivative Assets	10	10
Foreign exchange contracts | Derivative not designated as hedges | Other Assets
Derivative Assets
Derivative Assets	4	6
Foreign exchange contracts | Derivative not designated as hedges | Accounts payable and accrued liabilities
Derivative Liabilities
Derivative Liabilities	2	3
Interest rate swaps | Other current assets
Derivative Assets
Derivative Assets		2
Interest rate swaps | Derivative designated as hedges | Other Assets
Derivative Assets
Derivative Assets	$ 27