Employee Benefit Plans (Changes in Projected Benefit Obligations, Plan Assets and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Projected benefit obligation, beginning of year
Service cost			$ 0.6
Interest cost			1.5
Change in Plan Assets
Fair value of plan assets, beginning of year	$ 1,354.6
Fair value of plan assets, end of year	1,366.4	$ 1,354.6
Pension Benefits
Projected benefit obligation, beginning of year
Projected benefit obligation, beginning of year	2,145.8	674.7
Service cost	38.6	23.5	20.7
Interest cost	31.6	13.5	13.6
Participant contributions	2.0	1.8
Acquisitions	4.0	1,389.4
Plan settlements and terminations	(128.6)	(23.1)
Actuarial (gains) losses	(26.1)	37.2
Benefits paid	(52.8)	(24.6)
Impact of foreign currency translation	(67.9)	53.4
Projected benefit obligation, end of year	1,946.6	2,145.8	674.7
Change in Plan Assets
Fair value of plan assets, beginning of year	1,354.6	315.7
Actual return on plan assets	141.7	46.0
Company contributions	97.0	58.2
Participant contributions	2.0	1.8
Defined Benefit Plan, Plan Assets, Business Combination		959.3
Transferred assets	(2.1)
Plan settlements	(128.9)	(23.1)
Impact of foreign currency translation	(45.1)	21.3
Fair value of plan assets, end of year	1,366.4	1,354.6	315.7
Funded status of plans	(580.2)	(791.2)
Other Postretirement Benefits
Projected benefit obligation, beginning of year
Projected benefit obligation, beginning of year	188.8	33.8
Service cost	3.4	1.1
Interest cost	2.6	1.4
Participant contributions	2.4	0.1
Acquisitions	0.0	153.1
Plan settlements and terminations	(4.3)	(0.2)
Actuarial (gains) losses	16.2	1.1
Benefits paid	(20.7)	(1.6)
Impact of foreign currency translation	0.0	0.0
Projected benefit obligation, end of year	188.4	188.8	33.8
Change in Plan Assets
Fair value of plan assets, beginning of year	0.0	0.0
Actual return on plan assets	0.0	0.0
Company contributions	18.3	1.7
Participant contributions	2.4	0.1
Defined Benefit Plan, Plan Assets, Business Combination	0.0	0.0
Plan settlements	0.0	(0.2)
Impact of foreign currency translation	0.0	0.0
Fair value of plan assets, end of year	0.0	0.0	$ 0.0
Funded status of plans	$ (188.4)	$ (188.8)