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Significant Transactions - Kudu (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 04, 2019	Dec. 31, 2019	Dec. 31, 2020	Apr. 07, 2020	Apr. 03, 2019	Feb. 05, 2018
Other Significant Noncash Transactions [Line Items]
Equity method investment, aggregate cost						$ 125.0
Payments to acquire business, net	$ 81.4
Goodwill		$ 394.7	$ 525.5
Total commitment under revolving credit facility				$ 291.4
Kudu Debt | Delayed Draw Term Loans | Kudu
Other Significant Noncash Transactions [Line Items]
Total commitment under revolving credit facility		124.0
Undrawn amount on facility		68.0	34.8
Kudu
Other Significant Noncash Transactions [Line Items]
Ownership interest (as a percent)	99.10%				49.50%	49.50%
Fully diluted ownership interest (as a percent)	85.40%				42.70%	42.70%
Payments to acquire business, net	$ 81.4
Funded capital commitment	250.0	350.0
Assets acquired	155.5
Goodwill	7.6
Intangible assets acquired	2.2
Liabilities acquired	0.8
Noncontrolling interest acquired	$ 1.5
Increase in capital commitment		100.0
Unfunded Capital Commitment		$ 129.0	$ 47.5

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