Pension and Postretirement Benefits - Components of Net Periodic Benefit (Income) Expense (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 0.5	$ 0.5	$ 1.0	$ 1.7
Interest cost		39.1	38.4	78.0	78.0
Expected return on plan assets		(67.3)	(68.4)	(135.7)	(142.5)
Amortization of prior service benefit		(1.3)	(1.4)	(2.6)	(2.7)
Recognized net actuarial gain		41.9	46.6	82.8	92.8
Settlement losses		0.0	210.7	0.0	368.7
Net periodic pension expense (income)		12.9	226.4	23.5	396.0
Pension Plans | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.0	0.0	0.0	0.0
Interest cost		29.0	29.4	57.3	58.8
Expected return on plan assets		(47.4)	(48.5)	(94.9)	(99.9)
Amortization of prior service benefit		(0.7)	(0.6)	(1.3)	(1.2)
Recognized net actuarial gain		32.3	34.6	63.0	67.8
Settlement losses	$ 158.0	0.0	0.0	0.0	158.0
Net periodic pension expense (income)		13.2	14.9	24.1	183.5
Pension Plans | International Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.5	0.5	1.0	1.7
Interest cost		10.1	9.0	20.7	19.2
Expected return on plan assets		(19.9)	(19.9)	(40.8)	(42.6)
Amortization of prior service benefit		(0.6)	(0.8)	(1.3)	(1.5)
Recognized net actuarial gain		9.6	12.0	19.8	25.0
Settlement losses		0.0	210.7	0.0	210.7
Net periodic pension expense (income)		(0.3)	211.5	(0.6)	212.5
Pension Plans | Dutch Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement losses			182.6		182.6
Pension Plans | Swiss Plans
Defined Benefit Plan Disclosure [Line Items]
Settlement losses			28.1		28.1
Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		0.1	0.1	0.1	0.2
Interest cost		0.5	0.4	1.0	0.8
Expected return on plan assets		(0.1)	(0.1)	(0.2)	(0.2)
Amortization of prior service benefit		(0.4)	(0.4)	(0.7)	(0.8)
Recognized net actuarial gain		(0.5)	(0.7)	(1.0)	(1.3)
Net periodic pension expense (income)		$ (0.4)	$ (0.7)	$ (0.8)	$ (1.3)