Goodwill and Other Intangible Assets - Goodwill and Accumulated Goodwill Impairment Losses (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Oct. 01, 2023	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			$ 4,209.7	$ 4,305.3
Accumulated goodwill impairment losses, beginning balance			(1,520.2)	(1,482.8)
Goodwill, net, beginning balance			2,689.5	2,822.5
Goodwill acquired during year			231.9
Goodwill disposed of during the year			(231.9)
Effect of foreign currency exchange rates			35.6	(97.1)
Impairment losses during year			(30.0)	(37.4)
Other				1.5
Goodwill, gross, ending balance			4,245.3	4,209.7
Accumulated goodwill impairment losses, ending balance			(1,550.2)	(1,520.2)
Goodwill, net, ending balance			2,695.1	2,689.5
Operating segments | Northeast segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			923.5	923.5
Accumulated goodwill impairment losses, beginning balance			(798.8)	(761.4)
Goodwill, net, beginning balance			124.7	162.1
Goodwill acquired during year			0.0
Goodwill disposed of during the year			0.0
Effect of foreign currency exchange rates			0.0	0.0
Impairment losses during year	$ (30.0)	$ (37.4)	(30.0)	(37.4)
Other				0.0
Goodwill, gross, ending balance			923.5	923.5
Accumulated goodwill impairment losses, ending balance			(828.8)	(798.8)
Goodwill, net, ending balance			94.7	124.7
Operating segments | South segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			236.6	236.6
Accumulated goodwill impairment losses, beginning balance			(61.0)	(61.0)
Goodwill, net, beginning balance			175.6	175.6
Goodwill acquired during year			0.0
Goodwill disposed of during the year			0.0
Effect of foreign currency exchange rates			0.0	0.0
Impairment losses during year			0.0	0.0
Other				0.0
Goodwill, gross, ending balance			236.6	236.6
Accumulated goodwill impairment losses, ending balance			(61.0)	(61.0)
Goodwill, net, ending balance			175.6	175.6
Operating segments | West segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			216.8	216.8
Accumulated goodwill impairment losses, beginning balance			(16.6)	(16.6)
Goodwill, net, beginning balance			200.2	200.2
Goodwill acquired during year			0.0
Goodwill disposed of during the year			0.0
Effect of foreign currency exchange rates			0.0	0.0
Impairment losses during year			0.0	0.0
Other				0.0
Goodwill, gross, ending balance			216.8	216.8
Accumulated goodwill impairment losses, ending balance			(16.6)	(16.6)
Goodwill, net, ending balance			200.2	200.2
Operating segments | Midwest segment
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			1,116.7	1,116.7
Accumulated goodwill impairment losses, beginning balance			(556.1)	(556.1)
Goodwill, net, beginning balance			560.6	560.6
Goodwill acquired during year			0.0
Goodwill disposed of during the year			0.0
Effect of foreign currency exchange rates			0.0	0.0
Impairment losses during year			0.0	0.0
Other				0.0
Goodwill, gross, ending balance			1,116.7	1,116.7
Accumulated goodwill impairment losses, ending balance			(556.1)	(556.1)
Goodwill, net, ending balance			560.6	560.6
Operating segments | Interactive
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			1,628.4	1,724.0
Accumulated goodwill impairment losses, beginning balance			0.0	0.0
Goodwill, net, beginning balance			1,628.4	1,724.0
Goodwill acquired during year			231.9
Goodwill disposed of during the year			(231.9)
Effect of foreign currency exchange rates			35.6	(97.1)
Impairment losses during year			0.0	0.0
Other				1.5
Goodwill, gross, ending balance			1,664.0	1,628.4
Accumulated goodwill impairment losses, ending balance			0.0	0.0
Goodwill, net, ending balance			1,664.0	1,628.4
Other
Goodwill [Roll Forward]
Goodwill, gross, beginning balance			87.7	87.7
Accumulated goodwill impairment losses, beginning balance			(87.7)	(87.7)
Goodwill, net, beginning balance			0.0	0.0
Goodwill acquired during year			0.0
Goodwill disposed of during the year			0.0
Effect of foreign currency exchange rates			0.0	0.0
Impairment losses during year			0.0	0.0
Other				0.0
Goodwill, gross, ending balance			87.7	87.7
Accumulated goodwill impairment losses, ending balance			(87.7)	(87.7)
Goodwill, net, ending balance			$ 0.0	$ 0.0