Tax on Income - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Foreign pre-tax income	$ 206,000,000	$ 146,000,000	$ 219,000,000
Increase (decrease) in valuation allowance	(3,100,000)	6,600,000	6,100,000
Net operating profits	153,000,000
Deferred tax (benefit) charge related to profits that were not permanently reinvested	1,300,000	(42,800,000)	1,400,000
Unrecognized tax benefits that would impact the effective tax rate if recognized	215,000,000
Indemnification for gross unrecognized tax benefits from sellers of acquired companies	4,400,000
Expected decrease in unrecognized tax benefits as a result of a lapse of the statute of limitations	25,000,000
Tax related interest expense	(100,000)	1,800,000	1,700,000
Liability for tax-related interest expense	10,200,000	10,300,000
Domestic
Income Taxes [Line Items]
Net operating losses	437,000,000
Domestic | Subject To Section 382 Limitations
Income Taxes [Line Items]
Net operating losses	437,000,000
International
Income Taxes [Line Items]
Net operating losses	141,000,000
Undistributed earnings	1,300,000,000
International | Expires 2015
Income Taxes [Line Items]
Net operating losses	0
International | Expire Subsequent To Twenty Fifteen
Income Taxes [Line Items]
Net operating losses	50,000,000
International | Unlimited Life
Income Taxes [Line Items]
Net operating losses	91,000,000
Windfall Tax Benefits Recognized
Income Taxes [Line Items]
Windfall tax benefits	$ 25,900,000	$ 38,000,000	$ 11,600,000