Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Recurring [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Assets:
Derivative Financial Instruments, Assets	$ 3
Interest rate swaps [Member]
Assets:
Derivative Financial Instruments, Assets	1
Forward contracts [Member]
Assets:
Derivative Financial Instruments, Assets	2
Liabilities:
Derivative Financial Instruments, Liabilities	2
Level 1 [Member]
Assets:
Derivative Financial Instruments, Assets
Level 1 [Member] | Interest rate swaps [Member]
Assets:
Derivative Financial Instruments, Assets
Level 1 [Member] | Forward contracts [Member]
Assets:
Derivative Financial Instruments, Assets
Liabilities:
Derivative Financial Instruments, Liabilities
Level 2 [Member]
Assets:
Derivative Financial Instruments, Assets	3
Level 2 [Member] | Interest rate swaps [Member]
Assets:
Derivative Financial Instruments, Assets	1
Level 2 [Member] | Forward contracts [Member]
Assets:
Derivative Financial Instruments, Assets	2
Liabilities:
Derivative Financial Instruments, Liabilities	2
Level 3 [Member]
Assets:
Derivative Financial Instruments, Assets
Level 3 [Member] | Interest rate swaps [Member]
Assets:
Derivative Financial Instruments, Assets
Level 3 [Member] | Forward contracts [Member]
Assets:
Derivative Financial Instruments, Assets
Liabilities:
Derivative Financial Instruments, Liabilities