Share-Based Compensation, Settlement of Share-Based Awards, and Employee Benefit Plans - Share-based Compensation Expense Recognized (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 75.4	$ 74.5	$ 30.2
Less: Income tax benefit	(15.8)	(15.6)	(6.3)
Total share-based compensation expense, net of tax	59.6	58.9	23.9
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	16.7	14.5	5.7
Selling, General and Administrative Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 58.7	$ 60.0	$ 24.5

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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