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Income Taxes - Summary of Provision for Income Taxes (Benefits) by Taxing Jurisdiction (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]                      
Current, U.S. federal                 $ 133,250 $ 93,071 $ 85,540
Current, U.S. state and local                 16,312 16,363 22,108
Current, Non U.S.                 32,267 32,616 22,156
Current provision for income taxes (benefits)                 181,829 142,050 129,804
Deferred, U.S. federal                 (12,502) (13,010) (10,546)
Deferred, U.S. state and local                 (2,119) (2,235) 1,460
Deferred, Non U.S.                 (4,281) (1,722) (1,202)
Deferred provision for income taxes (benefits)                 (18,902) (16,967) (10,288)
Provision for income taxes from continuing operations $ 62,358 $ 35,650 $ 36,245 $ 28,674 $ 28,845 $ 32,241 $ 33,587 $ 30,410 $ 162,927 $ 125,083 119,516
Provision for income taxes from discontinued operations                     $ 6,390