Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
U.S. Federal statutory rate	35.00%
Reducing in tax loss carryforward due to realization domestic and state tax loss	$ 6	$ 4
Valuation allowance	139	135
Income tax expense (benefit)	131	122	19
Impact on earnings related to reversal of valuation allowance	11
Unremitted earnings of foreign subsidiaries	737
Estimated income tax liability related to unremitted earnings of foreign subsidiaries	121
Uncertain tax positions that would affect the effective tax rate if recognized	101	107	101
Liability for interest on unrecognized tax benefits	6	7	5
Estimated decrease in unrecognized tax benefits related to the expiration of foreign statute of limitations and the conclusion of foreign income tax examinations that may occur within the coming year	30
Maximum
Schedule of Equity Method Investments [Line Items]
Penalties accrued	1	1	1
Liability for penalties on unrecognized tax benefits	2	2	3
Accrued interest related to uncertain tax positions	1	2	2
Spain
Schedule of Equity Method Investments [Line Items]
Impact on earnings related to reversal of valuation allowance	$ 19