Employee Benefit Plans Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits, U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	$ 7.0	$ 3.8	$ 3.7
Interest Cost	85.2	82.2	89.9
Expected Return on Plan Assets	(102.8)	(108.9)	(117.8)
Amortization of Net Actuarial Loss	16.2	11.6	5.2
Amortization of Prior Service Cost (Credit)	(0.3)	0.0	0.0
Plan Amendment, Other Costs	0.0	0.0	0.0
Pension Settlement Costs	0.0	0.0	64.4
Net Periodic Benefit Cost	5.3	(11.3)	45.4
Pension Benefits, Non U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	0.0	0.0	2.3
Interest Cost	7.0	7.9	9.1
Expected Return on Plan Assets	(10.0)	(12.4)	(13.7)
Amortization of Net Actuarial Loss	0.1	0.3	0.4
Amortization of Prior Service Cost (Credit)	0.0	0.0	0.0
Plan Amendment, Other Costs	0.0	0.0	0.0
Pension Settlement Costs	0.0	0.0	0.0
Net Periodic Benefit Cost	(2.9)	(4.2)	(1.9)
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Service Cost	0.0	0.0	0.3
Interest Cost	7.2	7.2	7.9
Expected Return on Plan Assets	(0.6)	(0.7)	(0.7)
Amortization of Net Actuarial Loss	0.0	0.0	0.0
Amortization of Prior Service Cost (Credit)	(0.2)	(0.3)	(1.7)
Plan Amendment, Other Costs	0.9	0.0	0.0
Pension Settlement Costs	0.0	0.0	0.0
Net Periodic Benefit Cost	$ 7.3	$ 6.2	$ 5.8