Business Combinations - Contingent Consideration (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Contingent Consideration
Contingent consideration, liability beginning balance	$ 20.1
Increase (decrease) in fair value of contingent consideration liabilities	1.1
Contingent consideration, liability, ending balance	21.2
SES
Contingent Consideration
Contingent consideration, liability beginning balance	16.9
Increase (decrease) in fair value of contingent consideration liabilities	2.2
Contingent consideration, liability, ending balance	19.1
BIG
Contingent Consideration
Contingent consideration, liability beginning balance	3.2
Increase (decrease) in fair value of contingent consideration liabilities	(1.1)
Contingent consideration, liability, ending balance	$ 2.1