Post-Employment Plans - Projected Benefit Obligation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	$ 181.7
Fair value of plan assets at end of period	134.6	$ 181.7
Pension Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of period	202.6	214.3
Net acquisitions/(disposals)	1.3	0.0
Service costs	3.3	3.9	$ 2.7
Interest cost	2.7	2.6	2.8
Actuarial loss (gain)	(64.7)	6.1
Contributions paid	0.3	0.3
Benefits paid	(1.5)	(2.0)
Settlements	(1.7)	(7.9)
Foreign currency translation	(12.2)	(14.7)
Projected benefit obligation at end of period	127.5	202.6	214.3
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	181.7	189.1
Disposals	(1.1)	0.0
Actual return on plan assets	(34.2)	12.6
Benefits paid	(1.5)	(2.0)
Settlements	(1.7)	(7.9)
Employer contributions	2.3	2.7
Contributions paid	0.3	0.3
Foreign currency translation	(11.2)	(13.1)
Fair value of plan assets at end of period	134.6	181.7	189.1
Funded/ (unfunded) status	7.1	(20.9)
Pension Benefits | Other non-current assets
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	32.4	21.2
Pension Benefits | Current assets held for sale
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	0.0	0.4
Pension Benefits | Other non-current liabilities
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	(25.3)	(39.1)
Pension Benefits | Current liabilities held for sale
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	0.0	(3.4)
Other Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Projected benefit obligation at beginning of period	3.0	3.5
Net acquisitions/(disposals)	0.0	0.0
Service costs	0.0	0.0	0.0
Interest cost	0.1	0.1	0.1
Actuarial loss (gain)	(1.0)	(0.5)
Contributions paid	0.0	0.0
Benefits paid	(0.1)	(0.1)
Settlements	0.0	0.0
Foreign currency translation	0.0	0.0
Projected benefit obligation at end of period	2.0	3.0	3.5
Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of period	0.0	0.0
Disposals	0.0	0.0
Actual return on plan assets	0.0	0.0
Benefits paid	(0.1)	(0.1)
Settlements	0.0	0.0
Employer contributions	0.1	0.1
Contributions paid	0.0	0.0
Foreign currency translation	0.0	0.0
Fair value of plan assets at end of period	0.0	0.0	$ 0.0
Funded/ (unfunded) status		(3.0)
Other Benefits | Other non-current assets
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	0.0	0.0
Other Benefits | Current assets held for sale
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	0.0	0.0
Other Benefits | Other non-current liabilities
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	(2.0)	(3.0)
Other Benefits | Current liabilities held for sale
Change in Fair Value of Plan Assets [Roll Forward]
Funded/ (unfunded) status	$ 0.0	$ 0.0