Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segments:
Total revenue	$ 2,735.7	$ 2,509.6	$ 5,304.2	$ 4,766.6
Net revenue	2,375.5	2,269.6	4,602.7	4,297.3
Segment EBITA	370.2	406.0	637.2	670.6
Amortization of acquired intangibles	(21.1)	(21.6)	(42.4)	(43.2)
Depreciation	46.0	48.5	92.5	96.1
Capital expenditures	41.6	33.8	72.3	62.1
Total assets	17,249.2		17,249.2		$ 19,909.2
Operating income	349.1	384.4	594.8	627.4
Total (expenses) and other income	(34.3)	(30.3)	(70.1)	(156.9)
Income before income taxes	314.8	354.1	524.7	470.5
MD&E
Segments:
Total revenue	1,040.8	1,003.0	1,996.6	1,874.5
Net revenue	1,017.8	985.3	1,949.9	1,835.1
Segment EBITA	154.6	201.6	256.0	337.4
Amortization of acquired intangibles	17.8	18.1	35.7	36.1
Depreciation	25.6	24.7	51.8	49.3
Capital expenditures	21.5	17.2	37.5	30.2
Total assets	8,522.3		8,522.3		9,580.6
IA&C
Segments:
Total revenue	1,104.0	1,048.9	2,157.6	2,002.1
Net revenue	1,009.3	963.2	1,967.8	1,838.5
Segment EBITA	177.2	183.0	307.6	301.0
Amortization of acquired intangibles	2.3	2.6	4.7	5.2
Depreciation	14.5	17.0	29.2	33.5
Capital expenditures	11.0	10.4	17.0	19.1
Total assets	5,518.4		5,518.4		6,001.1
SC&E
Segments:
Total revenue	590.9	457.7	1,150.0	890.0
Net revenue	348.4	321.1	685.0	623.7
Segment EBITA	59.4	53.0	115.5	93.9
Amortization of acquired intangibles	1.0	0.9	2.0	1.9
Depreciation	4.3	4.7	8.4	9.3
Capital expenditures	2.5	1.6	3.3	2.3
Total assets	1,710.6		1,710.6		1,594.0
Corporate and Other
Segments:
Segment EBITA	(21.0)	(31.6)	(41.9)	(61.7)
Amortization of acquired intangibles	0.0	0.0	0.0	0.0
Depreciation	1.6	2.1	3.1	4.0
Capital expenditures	6.6	$ 4.6	14.5	$ 10.5
Total assets	$ 1,497.9		$ 1,497.9		$ 2,733.5