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Share-Based and Other Compensation - Annual Performance-Based RSU Grants (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 18, 2021 | Jan. 31, 2020 | Feb. 01, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
2021 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Award vesting period |  |  |  | 3 years | 3 years | 3 years
Vesting criteria, one (percent) |  |  |  | 100.00% |  |
Vesting criteria, two (percent) |  |  |  | 50.00% |  |
Vesting criteria, three (percent) |  |  |  | 50.00% |  |
2021 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance-based RSUs achievement target, participant one, percent |  |  |  | 175.00% |  |
Performance-based RSUs achievement target, all other participants, percent |  |  |  | 150.00% |  |
Fair value RSUs granted | $ 10.6 |  |  |  |  |
Estimated RSUs earned (in shares) | 281,333 |  |  |  |  |
Fair value per share on valuation date (in dollars per share) | $ 63.93 |  |  |  |  |
Expected share price volatility | 35.00% |  |  |  |  |
Risk-free interest rate | 0.20% |  |  |  |  |
2021 Performance-Based RSUs | One Participant |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Fair value per share on valuation date (in dollars per share) |  |  |  | $ 66.95 | $ 85.52 | $ 73.18
2020 Performance Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance-based RSUs achievement target, all other participants, percent |  |  |  | 100.00% |  |
Fair value RSUs granted |  | $ 12.9 |  |  |  |
Fair value per share on valuation date (in dollars per share) |  | $ 84.54 |  |  |  |
Expected share price volatility |  | 17.00% |  |  |  |
Risk-free interest rate |  | 1.35% |  |  |  |
2019 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Performance-based RSUs achievement target, participant one, percent |  |  |  | 219.00% |  |
Performance-based RSUs achievement target, all other participants, percent |  |  |  | 175.00% |  |
Fair value RSUs granted |  |  | $ 10.2 |  |  |
Fair value per share on valuation date (in dollars per share) |  |  | $ 72.57 |  |  |
Expected share price volatility |  |  | 19.00% |  |  |
Risk-free interest rate |  |  | 2.48% |  |  |
Executive officer share-based compensation programs | 2021 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Grants in period (in shares) | 172,430 |  |  |  |  |
Executive officer share-based compensation programs | 2020 Performance Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Grants in period (in shares) |  | 154,267 |  |  |  |
Executive officer share-based compensation programs | 2019 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Grants in period (in shares) |  |  | 143,396 |  |  |
Market measure-based RSU estimate of probable | 2020 Performance Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Estimated RSUs earned (in shares) |  | 188,102 |  |  |  |
Market measure-based RSU estimate of probable | 2019 Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Estimated RSUs earned (in shares) |  |  |  | 220,151 |  |

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- Definition The total fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans. + References No definition available. + Details
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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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