Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 BusinessTaxProvision	Jun. 30, 2013	Dec. 31, 2012
Income Tax Contingency [Line Items]
Effective tax rate	37.70%	16.50%	1.50%	79.40%
U.S federal statutory rate	35.00%	35.00%	35.00%	35.00%
Operational losses in certain foreign jurisdictions	$ 20,000,000		$ 36,000,000
Tax benefit	78,000,000	21,000,000	1,000,000	85,000,000
Percentage of tax differences that reverse within end of 2014		(51.50%)	(36.50%)
Nondeductible charge		103,000,000		103,000,000
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					19,000,000
Foreign tax credits carry forward period			10 years
Maximum [Member]
Income Tax Contingency [Line Items]
Percentage of tax differences that reverse within end of 2014			34.00%
Minimum [Member]
Income Tax Contingency [Line Items]
Percentage of tax differences that reverse within end of 2014			15.00%
Italy [Member]
Income Tax Contingency [Line Items]
Tax benefit		0
Foreign Jurisdictions [Member]
Income Tax Contingency [Line Items]
Tax benefit	0		0
Spain and Australia Authority [Member]
Income Tax Contingency [Line Items]
Discrete income tax charge		10,000,000
U.S. [Member]
Income Tax Contingency [Line Items]
Discrete income tax charge				10,000,000
Discrete income tax benefit				19,000,000
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Decrease to the net deferred tax asset and noncash charge to earnings			$ 60,000,000