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Stock-Based Compensation - Narrative (Details) $ in Millions					1 Months Ended	12 Months Ended
	May 09, 2021 shares	Jun. 24, 2020	Mar. 16, 2020 USD ($) grantee	Mar. 20, 2019 USD ($) grantee	May 31, 2017 day	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)	Jun. 04, 2021 shares	Mar. 21, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | shares									4,500,000	1,235,669
Share-based compensation arrangement by share-based payment award, number of additional shares authorized (in shares) | shares	776,777
Total stock-based compensation cost recognized						$ 74.8	$ 63.9	$ 45.6
Total unrecognized compensation cost						5.5
Tax benefit from stock option and restricted stock units						14.1	11.5	9.9
Vesting period		1 year
Total incremental compensation cost			$ 21.8	$ 1.3
Shares exercised, total intrinsic value						48.1	8.7	5.7
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost						$ 40.1
Compensation cost expected recognition weighted average period (in years)						1 year 2 months 12 days
Shares granted fair value						$ 44.5	37.0	34.0
Shares vested fair value						$ 24.4	$ 11.9	7.6
Deferred stock units (in shares) | shares						485,000	472,000
Restricted Stock Units (RSUs) | Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						12 months
Restricted Stock Units (RSUs) | Certain Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						3 years
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted fair value						$ 34.9	$ 58.5	19.0
Shares vested fair value						$ 23.7	$ 21.7	$ 9.3
Deferred stock units (in shares) | shares						557,000	582,000
Performance Based Restricted Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance goals tracking period						1 year
Performance Based Restricted Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance goals tracking period						3 years
Stock Options, Non-CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of grantees affected | grantee			332	215
TSR
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost						$ 52.8
Compensation cost expected recognition weighted average period (in years)						1 year 8 months 12 days
TSR | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance goals tracking period						1 year
TSR | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance goals tracking period						3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period					10 years
Number of consecutive trading days | day					20
Award vesting rights						100.00%
Derived service period						3 years
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost						$ 10.3
Vesting period						3 years
Compensation cost expected recognition weighted average period (in years)						1 year 3 months 18 days
Expiration period						10 years
Stock Option | First anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights						33.00%
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period						200 days
Deferred stock units (in shares) | shares						58,000	54,000
Common Stock Issued
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant (in shares) | shares						4,400,000

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