Significant Transactions - Kudu (Details) - USD ($) $ in Millions		3 Months Ended
	Apr. 04, 2019	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2020	Apr. 03, 2019	Feb. 05, 2018
Other Significant Noncash Transactions [Line Items]
Goodwill		$ 645.5		$ 525.5
Kudu
Other Significant Noncash Transactions [Line Items]
Equity method investment, aggregate cost						$ 125.0
Ownership interest (as a percent)	99.10%	99.30%		99.30%	49.50%	49.50%
Fully diluted ownership interest (as a percent)	85.40%	84.70%		85.40%	42.70%	42.70%
Payments to acquire business, net	$ 81.4
Funded capital commitment	250.0	$ 369.0	$ 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		$ 19.0	$ 100.0