Goodwill and Other Intangible Assets - Summary of Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill, fair value	$ 176.5	$ 142.3
Goodwill	176.5	142.3
Other intangible assets, fair value	404.6	347.5
Other intangible assets, accumulated amortization	12.2	7.0
Ark
Goodwill [Line Items]
Goodwill, fair value	116.8	116.8
Goodwill	116.8	116.8
Other intangible assets, fair value	175.7	175.7
Other intangible assets, accumulated amortization	0.0	0.0
Other intangible assets, net	175.7	175.7
Kudu
Goodwill [Line Items]
Goodwill, fair value	7.6	7.6
Goodwill	7.6	7.6
Other Operations
Goodwill [Line Items]
Goodwill, fair value	52.1	17.9
Goodwill	52.1	17.9
Other intangible assets, fair value	50.2	27.3
Other intangible assets, accumulated amortization	11.0	6.1
Other intangible assets, net	$ 39.2	21.2
Trade names | Kudu
Goodwill [Line Items]
Acquired other intangible assets, weighted average useful life (in years)	7 years
Other intangible assets, fair value	$ 2.2	2.2
Other intangible assets, accumulated amortization	1.2	0.9
Other intangible assets, net	$ 1.0	1.3
Trade names | Other Operations
Goodwill [Line Items]
Acquired other intangible assets, weighted average useful life (in years)	15 years 10 months 24 days
Other intangible assets, fair value	$ 17.9	8.2
Other intangible assets, accumulated amortization	3.0	1.5
Other intangible assets, net	$ 14.9	6.7
Customer relationships | Other Operations
Goodwill [Line Items]
Acquired other intangible assets, weighted average useful life (in years)	12 years 4 months 24 days
Other intangible assets, fair value	$ 29.5	18.8
Other intangible assets, accumulated amortization	7.5	4.5
Other intangible assets, net	$ 22.0	14.3
Other Operations | Other Operations
Goodwill [Line Items]
Acquired other intangible assets, weighted average useful life (in years)	12 years 1 month 6 days
Other intangible assets, fair value	$ 2.8	0.3
Other intangible assets, accumulated amortization	0.5	0.1
Other intangible assets, net	2.3	0.2
Total other intangible assets
Goodwill [Line Items]
Other intangible assets, fair value	228.1	205.2
Other intangible assets, accumulated amortization	12.2	7.0
Other intangible assets, net	215.9	198.2
Total Equity
Goodwill [Line Items]
Goodwill and other intangible assets	392.4	340.5
Non-controlling Interests
Goodwill [Line Items]
Goodwill and other intangible assets	(102.7)	(91.8)
Total
Goodwill [Line Items]
Goodwill and other intangible assets	$ 289.7	$ 248.7