Summarization for Foreign Currency Forward Purchase and Sale Contracts (Detail) In Millions, unless otherwise specified	Mar. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] Australian dollars [Member] AUD	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] British pounds [Member] GBP (£)	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] Canada, Dollars CAD	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] European euro [Member] EUR (€)	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] South African Rand [Member] ZAR	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] Japanese yen [Member] JPY (¥)	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] Polish Zloty [Member] PLN	Mar. 31, 2014 Long [Member] Foreign Exchange Forward Contracts [Member] U.S. dollars [Member] USD ($)	Mar. 31, 2014 Short [Member] Foreign Exchange Forward Contracts [Member] British pounds [Member] GBP (£)	Mar. 31, 2014 Short [Member] Foreign Exchange Forward Contracts [Member] Canada, Dollars CAD	Mar. 31, 2014 Short [Member] Foreign Exchange Forward Contracts [Member] European euro [Member] EUR (€)	Mar. 31, 2014 Short [Member] Foreign Exchange Forward Contracts [Member] Japanese yen [Member] JPY (¥)	Mar. 31, 2014 Short [Member] Foreign Exchange Forward Contracts [Member] U.S. dollars [Member] USD ($)
Derivative [Line Items]
Derivative, Notional Amount			2	£ 31	12	€ 8	222	¥ 196	21	$ 16	£ 5	2	€ 15	¥ 461	$ 84
Negotiable Financial Instruments Collected Before Maturity Date And Sold At Discount	$ 6	$ 5