Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Total taxes paid	$ 97,500,000	$ 88,900,000	$ 70,200,000
Undistributed earnings of foreign subsidiaries	875,900,000
Undistributed foreign earnings reinvested	691,900,000
Cash and cash equivalents and marketable securities were held by foreign subsidiaries	645,200,000
Unrecognized tax benefits that would affect the effective tax rate, if recognized	500,000
Anticipated decrease in unrecognized tax benefits	$ 0
State and local | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2000
State and local | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2015
Non-U.S. | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2007
Non-U.S. | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2015
U.S. federal | Earliest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2014
U.S. federal | Latest Tax Year
Income Tax Contingency [Line Items]
Income tax examinations, years under examination	2015
Discontinued Operations
Income Tax Contingency [Line Items]
Additional income tax accrual	$ 47,900,000