Employee Benefit and Retirement Plans - Schedule of Reconciliation of Benefit Obligations (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits [Member] | United States [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 1,553.7	$ 1,561.0
Service cost	0.8	2.8	$ 2.7
Interest cost	46.4	49.6	44.4
Actuarial (gain) loss	(147.7)	81.9
Benefits paid	(105.2)	(100.4)
Curtailments, settlements and other		(41.2)
Benefit obligation at end of year	1,348.0	1,553.7	1,561.0
Change in plan assets:
Fair value of plan assets at beginning of year	1,271.1	1,230.6
Actual return (loss) on plan assets	(71.2)	171.4
Contributions	10.2	10.7
Defined Benefit Plan, Benefits Paid	(105.2)	(100.4)
Settlements and other		(41.2)
Fair value of plan assets at end of year	1,104.9	1,271.1	1,230.6
Funded status at end of year	(243.1)	(282.6)
Amounts recognized in the Consolidated Balance Sheets:
Accrued current benefit cost-other accrued liabilities	(9.9)	(10.3)
Accrued noncurrent benefit cost- other noncurrent liabilities	(233.2)	(272.3)
Net amount recognized	(243.1)	(282.6)
Pension Benefits [Member] | International [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	666.2	626.4
Service cost	5.3	6.4	6.0
Interest cost	13.0	13.2	17.2
Actuarial (gain) loss	(32.7)	3.2
Amendments	2.5	0.4
Currency translation	(31.5)	69.4
Benefits paid	(30.0)	(22.8)
Acquisitions and dispositions, net	0.8	(13.9)
Curtailments, settlements and other	(23.4)	(16.1)
Benefit obligation at end of year	570.2	666.2	626.4
Change in plan assets:
Fair value of plan assets at beginning of year	602.1	547.6
Actual return (loss) on plan assets	(11.0)	24.2
Contributions	14.0	15.2
Defined Benefit Plan, Foreign Currency Exchange Rate Changes, Plan Assets	(29.2)	58.5
Defined Benefit Plan, Benefits Paid	(30.7)	(22.1)
Acquisitions and dispositions, net	0.8	(5.5)
Settlements and other	(22.4)	(15.8)
Fair value of plan assets at end of year	523.6	602.1	547.6
Funded status at end of year	(46.6)	(64.1)
Amounts recognized in the Consolidated Balance Sheets:
Prepaid benefit cost, included in other assets	71.5	63.5
Accrued current benefit cost-other accrued liabilities	(4.7)	(5.0)
Accrued noncurrent benefit cost- other noncurrent liabilities	(113.4)	(122.6)
Net amount recognized	(46.6)	(64.1)
Postretirement Benefits [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	65.1	74.6
Service cost	0.3	0.1	0.1
Interest cost	1.8	2.2	2.2
Actuarial (gain) loss	(8.9)	(0.4)
Amendments		(5.0)
Benefits paid	(4.9)	(6.4)
Curtailments, settlements and other	(0.4)
Benefit obligation at end of year	53.0	65.1	$ 74.6
Change in plan assets:
Funded status at end of year	(53.0)	(65.1)
Amounts recognized in the Consolidated Balance Sheets:
Accrued current benefit cost-other accrued liabilities	(5.3)	(5.8)
Accrued noncurrent benefit cost- other noncurrent liabilities	(47.7)	(59.3)
Net amount recognized	$ (53.0)	$ (65.1)