Revenue - Change in Contract Assets and Liabilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Contract assets
Accounts receivable, net of allowances, beginning	$ 236.3
Change in accounts receivable	42.1
Accounts receivable, net of allowances, ending	278.4
Unbilled contract revenue, beginning	93.5
Change in unbilled contract revenue	40.2
Unbilled contract revenue, ending	$ 133.7
Change in accounts receivable (as a percentage)	17.80%
Change in unbilled contract revenue (as a percentage)	43.00%
Contract liabilities
Customer advances and billings in excess of contract revenue, beginning	$ 148.5
Change in customer advances and billings in excess of contract revenue	22.1
Customer advances and billings in excess of contract revenue, ending	170.6
Long term deferred revenue, beginning	0.4
Change in long-term deferred revenue	(0.1)
Long-term deferred revenue, ending	$ 0.3
Change in customer advances and billings in excess of contract revenue (as a percentage)	14.90%
Change in long-term deferred revenue (as a percentage)	(25.00%)