Share-Based Compensation - Schedule of Share Based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax share-based compensation expense	$ 17.0	$ 17.2
Less: Income tax benefit	(3.6)	(3.6)
Total share-based compensation expense, net of tax	13.4	13.6
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax share-based compensation expense	2.8	4.9
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax share-based compensation expense	$ 14.2	$ 12.3

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
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-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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