Goodwill and Other Intangible Assets - Goodwill and Accumulated Goodwill Impairment Losses (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	$ 2,640,500,000	$ 2,639,900,000	$ 2,640,500,000
Accumulated goodwill impairment losses, beginning balance	(1,369,800,000)	(1,482,800,000)	(1,369,800,000)
Goodwill, net, beginning balance	1,270,700,000	1,157,100,000	1,270,700,000
Goodwill acquired during year		1,708,200,000
Impairment losses during year	(113,000,000)	0	(113,000,000.0)	$ (88,000,000)
Other			(600,000)
Effects of foreign currency exchange rates		(42,800,000)
Goodwill, gross, ending balance		4,305,300,000	2,639,900,000	2,640,500,000
Accumulated goodwill impairment losses, ending balance		(1,482,800,000)	(1,482,800,000)	(1,369,800,000)
Goodwill, net, ending balance		2,822,500,000	1,157,100,000	1,270,700,000
Northeast segment
Goodwill [Roll Forward]
Impairment losses during year		(10,300,000)
South segment
Goodwill [Roll Forward]
Impairment losses during year		(17,400,000)
Midwest segment
Goodwill [Roll Forward]
Impairment losses during year		(60,300,000)
Operating segments | Northeast segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	914,300,000	914,300,000	914,300,000
Accumulated goodwill impairment losses, beginning balance	(717,900,000)	(761,400,000)	(717,900,000)
Goodwill, net, beginning balance	196,400,000	152,900,000	196,400,000
Goodwill acquired during year		9,200,000
Impairment losses during year	(43,500,000)		(43,500,000)
Other			0
Effects of foreign currency exchange rates		0
Goodwill, gross, ending balance		923,500,000	914,300,000	914,300,000
Accumulated goodwill impairment losses, ending balance		(761,400,000)	(761,400,000)	(717,900,000)
Goodwill, net, ending balance		162,100,000	152,900,000	196,400,000
Operating segments | South segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	236,600,000	236,600,000	236,600,000
Accumulated goodwill impairment losses, beginning balance	(52,000,000.0)	(61,000,000.0)	(52,000,000.0)
Goodwill, net, beginning balance	184,600,000	175,600,000	184,600,000
Goodwill acquired during year		0
Impairment losses during year	(9,000,000)		(9,000,000.0)
Other			0
Effects of foreign currency exchange rates		0
Goodwill, gross, ending balance		236,600,000	236,600,000	236,600,000
Accumulated goodwill impairment losses, ending balance		(61,000,000.0)	(61,000,000.0)	(52,000,000.0)
Goodwill, net, ending balance		175,600,000	175,600,000	184,600,000
Operating segments | West segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	216,800,000	216,800,000	216,800,000
Accumulated goodwill impairment losses, beginning balance	(16,600,000)	(16,600,000)	(16,600,000)
Goodwill, net, beginning balance	200,200,000	200,200,000	200,200,000
Goodwill acquired during year		0
Impairment losses during year			0
Other			0
Effects of foreign currency exchange rates		0
Goodwill, gross, ending balance		216,800,000	216,800,000	216,800,000
Accumulated goodwill impairment losses, ending balance		(16,600,000)	(16,600,000)	(16,600,000)
Goodwill, net, ending balance		200,200,000	200,200,000	200,200,000
Operating segments | Midwest segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	1,116,700,000	1,116,700,000	1,116,700,000
Accumulated goodwill impairment losses, beginning balance	(495,600,000)	(556,100,000)	(495,600,000)
Goodwill, net, beginning balance	621,100,000	560,600,000	621,100,000
Goodwill acquired during year		0
Impairment losses during year	(60,500,000)		(60,500,000)
Other			0
Effects of foreign currency exchange rates		0
Goodwill, gross, ending balance		1,116,700,000	1,116,700,000	1,116,700,000
Accumulated goodwill impairment losses, ending balance		(556,100,000)	(556,100,000)	(495,600,000)
Goodwill, net, ending balance		560,600,000	560,600,000	621,100,000
Operating segments | Interactive
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	67,800,000	67,800,000	67,800,000
Accumulated goodwill impairment losses, beginning balance	0	0	0
Goodwill, net, beginning balance	67,800,000	67,800,000	67,800,000
Goodwill acquired during year		1,699,000,000
Impairment losses during year			0
Other			0
Effects of foreign currency exchange rates		(42,800,000)
Goodwill, gross, ending balance		1,724,000,000	67,800,000	67,800,000
Accumulated goodwill impairment losses, ending balance		0	0	0
Goodwill, net, ending balance		1,724,000,000	67,800,000	67,800,000
Other
Goodwill [Roll Forward]
Goodwill, gross, beginning balance	88,300,000	87,700,000	88,300,000
Accumulated goodwill impairment losses, beginning balance	(87,700,000)	(87,700,000)	(87,700,000)
Goodwill, net, beginning balance	$ 600,000	0	600,000
Goodwill acquired during year		0
Impairment losses during year			0
Other			(600,000)
Effects of foreign currency exchange rates		0
Goodwill, gross, ending balance		87,700,000	87,700,000	88,300,000
Accumulated goodwill impairment losses, ending balance		(87,700,000)	(87,700,000)	(87,700,000)
Goodwill, net, ending balance		$ 0	$ 0	$ 600,000