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Employee Stock Purchase Plan, Stock Options and Warrants - PSUs and RSUs Granted (Details) - $ / shares shares in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Stock-Settled Performance-Based Restricted Stock Units |  |  |
PSUs and RSUs Granted |  |  |
Granted (in shares) | 103 |  |
Weighted average grant-date fair value (in dollars per share) | $ 61.39 | $ 43.63 |
Vested (in shares) | 26 | 0 | 0
Stock-Settled Performance-Based Restricted Stock Units | Target units granted |  |  |
PSUs and RSUs Granted |  |  |
Granted (in shares) | 52 | 61 |
Stock-Settled Performance-Based Restricted Stock Units | Maximum units granted |  |  |
PSUs and RSUs Granted |  |  |
Granted (in shares) | 103 | 102 |
Stock-Settled Performance-Based Restricted Stock Units | Maximum potential shares |  |  |
PSUs and RSUs Granted |  |  |
Granted (in shares) | 129 | 127 |
Stock-Settled Performance-Based Restricted Stock Units | rTSR |  |  |
PSUs and RSUs Granted |  |  |
Multiplying factor | 125.00% |  |
Stock-Settled Performance-Based Restricted Stock Units | rTSR | Maximum |  |  |
PSUs and RSUs Granted |  |  |
Multiplying factor | 125.00% |  |
Stock-Settled Performance-Based Restricted Stock Units | FCF | Maximum |  |  |
PSUs and RSUs Granted |  |  |
Multiplying factor | 100.00% | 100.00% | 200.00%
Restricted Stock Units |  |  |
PSUs and RSUs Granted |  |  |
Granted (in shares) | 26 | 34 |
Weighted average grant-date fair value (in dollars per share) | $ 61.77 | $ 42.98 |
Vested (in shares) | 34 | 0 | 0

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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 number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting 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 (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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