Pension and Other Postretirement Benefit Plans - Reconciliation of Change in Benefit Obligation, Change in Plan Assets and Amounts Recognized in Consolidated Balance Sheet (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension
Change in benefit obligation:
Benefit obligation at beginning of period	$ 686.6	$ 717.8
Service cost	5.6	4.7	$ 3.7
Interest cost	29.8	28.7	28.5
Actuarial (gain) loss	3.5	(42.5)
Benefits paid	(22.4)	(22.1)
Lump sum payout	(154.9)	0.0
Curtailment	0.0	0.0
Special termination benefits	0.0	0.0
Translation adjustment	0.0	0.0
Benefit obligation at end of period	548.2	686.6	717.8
Change in plan assets:
Fair value of plan assets at beginning of period	522.1	519.2
Actual return on plan assets	30.2	(3.7)
Employer contributions	37.6	28.7
Benefits paid	(22.4)	(22.1)
Lump sum payout	(154.9)	0.0
Translation adjustment	0.0	0.0
Fair value of plan assets at end of period	412.6	522.1	519.2
Funded status	(135.6)	(164.5)
Amounts recognized in the consolidated balance sheet:
Other long-term assets	0.0	0.0
Accrued liabilities	(2.2)	(2.5)
Other long-term liabilities	(133.4)	(162.0)
Foreign Pension
Change in benefit obligation:
Benefit obligation at beginning of period	427.4	493.0
Service cost	6.5	8.4	8.8
Interest cost	15.8	16.2	20.4
Actuarial (gain) loss	27.4	(12.4)
Benefits paid	(29.1)	(19.9)
Lump sum payout	0.0	0.0
Curtailment	0.0	6.5
Special termination benefits	0.0	0.0
Translation adjustment	(5.5)	(64.4)
Benefit obligation at end of period	442.5	427.4	493.0
Change in plan assets:
Fair value of plan assets at beginning of period	368.2	415.1
Actual return on plan assets	21.1	19.5
Employer contributions	8.5	13.9
Benefits paid	(29.1)	(19.9)
Lump sum payout	0.0	0.0
Translation adjustment	(1.6)	(60.4)
Fair value of plan assets at end of period	367.1	368.2	415.1
Funded status	(75.4)	(59.2)
Amounts recognized in the consolidated balance sheet:
Other long-term assets	40.3	43.7
Accrued liabilities	(2.7)	(3.4)
Other long-term liabilities	(113.0)	(99.5)
U.S. Other Postretirement
Change in benefit obligation:
Benefit obligation at beginning of period	78.9	83.3
Service cost	0.2	0.2	0.2
Interest cost	3.2	3.1	4.0
Actuarial (gain) loss	(12.8)	(3.1)
Benefits paid	(4.8)	(4.6)
Lump sum payout	0.0	0.0
Curtailment	0.0	0.0
Special termination benefits	0.0	0.0
Translation adjustment	0.0	0.0
Benefit obligation at end of period	64.7	78.9	83.3
Change in plan assets:
Fair value of plan assets at beginning of period	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contributions	4.8	4.6
Benefits paid	(4.8)	(4.6)
Lump sum payout	0.0	0.0
Translation adjustment	0.0	0.0
Fair value of plan assets at end of period	0.0	0.0	0.0
Funded status	(64.7)	(78.9)
Amounts recognized in the consolidated balance sheet:
Other long-term assets	0.0	0.0
Accrued liabilities	(4.2)	(5.1)
Other long-term liabilities	(60.5)	(73.8)
Foreign Other Postretirement
Change in benefit obligation:
Benefit obligation at beginning of period	36.5	46.8
Service cost	0.5	0.7	0.9
Interest cost	1.6	1.7	2.0
Actuarial (gain) loss	0.8	(1.2)
Benefits paid	(1.9)	(2.2)
Lump sum payout	0.0	0.0
Curtailment	0.0	(2.8)
Special termination benefits	0.3	0.8
Translation adjustment	1.0	(7.3)
Benefit obligation at end of period	38.8	36.5	46.8
Change in plan assets:
Fair value of plan assets at beginning of period	0.0	0.0
Actual return on plan assets	0.0	0.0
Employer contributions	1.9	2.2
Benefits paid	(1.9)	(2.2)
Lump sum payout	0.0	0.0
Translation adjustment	0.0	0.0
Fair value of plan assets at end of period	0.0	0.0	$ 0.0
Funded status	(38.8)	(36.5)
Amounts recognized in the consolidated balance sheet:
Other long-term assets	0.0	0.0
Accrued liabilities	(1.5)	(1.6)
Other long-term liabilities	$ (37.3)	$ (34.9)