Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 BusinessTaxProvision	Mar. 31, 2013
Income Taxes [Line Items]
Effective tax rate	28.10%	27.40%
U.S federal statutory rate	35.00%	35.00%
Operational losses in certain foreign jurisdictions	$ 56
Number of specific temporary business tax provisions expired during the period	2
Tax provision due to two specific temporary business tax provision that expired in 2011	19
U.S. [Member]
Income Taxes [Line Items]
Discrete income tax benefit		$ 19