Employee Benefit Plans - Schedule of Funded Status (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Amounts recognized in the Consolidated Balance Sheets:
Noncurrent	$ (216.8)	$ (249.4)
U.S. Defined Benefit Pension Plans
Change in benefit obligation:
Balance at beginning of the year	70.2	62.0
Interest cost	2.7	2.9	$ 2.4
Actuarial loss (gain)	(2.2)	9.9
Benefits paid	(4.1)	(4.6)
Balance at end of the year	66.6	70.2	62.0
Change in plan assets:
Fair value at beginning of the year	53.6	54.9
Actual return on plan assets	(2.3)	2.0
Employer contributions	0.4	1.3
Benefits paid	(4.1)	(4.6)
Fair value at end of year	47.6	53.6	54.9
Funded status	19.0	16.6
Amounts recognized in the Consolidated Balance Sheets:
Current	(0.3)	(0.3)
Noncurrent	(18.7)	(16.3)
Total recognized in balance sheet	(19.0)	(16.6)
Accumulated other comprehensive loss:
Accumulated other comprehensive loss—Actuarial loss	42.0	39.5
Total amount recognized in balance sheet and AOCI	23.0	22.9
Accumulated benefit obligations (“ABO”)	66.6	70.2
Foreign Pension Plan Defined Benefit
Change in benefit obligation:
Balance at beginning of the year	659.2	604.9
Service cost	11.2	9.9	13.1
Interest cost	15.1	22.2	21.6
Participants’ contributions	1.6	2.0
Actuarial loss (gain)	(10.0)	122.2
Change in currency exchange rates	(76.9)	(75.3)
Benefits paid	(21.3)	(26.7)
Balance at end of the year	578.9	659.2	604.9
Change in plan assets:
Fair value at beginning of the year	425.5	441.6
Actual return on plan assets	10.8	40.7
Employer contributions	17.6	20.4
Participants’ contributions	1.6	2.0
Change in currency exchange rates	(51.7)	(52.5)
Benefits paid	(21.3)	(26.7)
Fair value at end of year	382.5	425.5	441.6
Funded status	(196.4)	(233.7)
Amounts recognized in the Consolidated Balance Sheets:
Pension asset	1.7
Current		(0.6)
Noncurrent	(198.1)	(233.1)
Total recognized in balance sheet	(196.4)	(233.7)
Accumulated other comprehensive loss:
Accumulated other comprehensive loss—Actuarial loss	234.1	252.3
Accumulated other comprehensive income (loss) - Prior service credit	1.9	2.2
Accumulated other comprehensive loss, Total	236.0	254.5
Total amount recognized in balance sheet and AOCI	39.6	20.8
Accumulated benefit obligations (“ABO”)	554.4	627.5
OPEB
Change in benefit obligation:
Balance at beginning of the year	15.4	15.1
Service cost	0.1	0.1	0.3
Interest cost	0.5	0.6	0.7
Actuarial loss (gain)	(0.8)	1.4
Change in currency exchange rates	(1.2)	(0.6)
Benefits paid	(1.1)	(1.2)
Balance at end of the year	12.9	15.4	$ 15.1
Change in plan assets:
Benefits paid	(1.1)	(1.2)
Funded status	(12.9)	(15.4)
Amounts recognized in the Consolidated Balance Sheets:
Current	(1.1)	(1.3)
Noncurrent	(11.8)	(14.1)
Total recognized in balance sheet	(12.9)	(15.4)
Accumulated other comprehensive loss:
Accumulated other comprehensive loss—Actuarial loss	2.4	3.2
Accumulated other comprehensive income (loss) - Prior service credit	(8.6)	(10.6)
Accumulated other comprehensive loss, Total	(6.2)	(7.4)
Total amount recognized in balance sheet and AOCI	$ (19.1)	$ (22.8)