Provision for Income Taxes (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 278.2	$ 252.8	$ 226.2
State and Local	40.1	70.2	57.6
Non-U.S.	93.6	102.1	96.8
Total current	411.9	425.1	380.6
Deferred:
Federal	14.7	0.9	(13.1)
State and Local	7.6	4.9	(5.6)
Non-U.S.	(4.2)	24.1	(8.5)
Total deferred	18.1	29.9	(27.2)
Total provision for income taxes	$ 430.0	$ 455.0	$ 353.4