Schedule of Accounts Payable and Accrued Expenses (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Liabilities [Line Items]
Trade accounts payable	$ 67	$ 97
Settlement obligations	184	216
Client deposits	190	147
Accrued compensation and benefits	165	144
Other accrued expenses	150	117
Total	$ 756	$ 721