Income Taxes - Components of Earnings Before Taxes and Income Taxes Paid (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
United States operations	$ (251.8)	$ (246.2)	$ 403.3
Foreign operations	651.4	399.4	536.1
Total	399.6	153.2	939.4
Current:
Federal	134.2	55.8	178.2
State	12.4	18.9	16.5
Foreign	101.6	96.3	116.0
Current, Total	248.2	171.0	310.7
Deferred:
Federal	(108.5)	(120.6)	(54.8)
State	2.3	(20.0)	(6.6)
Foreign	(47.0)	(23.4)	(29.1)
Deferred, Total	(153.2)	(164.0)	(90.5)
Provision for income taxes	95.0	7.0	220.2
Income taxes paid	$ 269.6	$ 193.6	$ 340.1