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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Equity Awards | Equity award units granted to employees:
(Units in Thousands) |  | 2023 |  | 2022 |  | 2021
Granted units |  | 586 |  |  | 395 |  |  | 421 |
Weighted average grant date fair value |  | $ | 67.06 |  |  | $ | 68.43 |  |  | $ | 66.03 |
Equity awards vested:
(Units in Thousands, Fair Value in Millions) |  | 2023 |  | 2022 |  | 2021
Vested Units |  | 329 |  |  | 319 |  |  | 392 |
Total Fair Value |  | $ | 20 |  |  | $ | 22 |  |  | $ | 27 |
Changes in the nonvested portion of equity award units:
(Units in Thousands) |  | Units |  | Weighted Average Grant Date Fair Value
Nonvested Units at Jan. 1, 2023 |  | 708 |  |  | $ | 67.35 |
Granted |  | 586 |  |  | 67.06 |
Forfeited |  | (184) |  |  | 68.42 |
Vested |  | (329) |  |  | 66.23 |
Dividend equivalents |  | 38 |  |  | 67.65 |
Nonvested Units at Dec. 31, 2023 |  | 819 |  |  | 67.36 |
Stock Equivalent Unit Plan | Stock equivalent units granted:
(Units in Thousands) |  | 2023 |  | 2022 |  | 2021
Granted units |  | 38 |  |  | 29 |  |  | 31 |
Weighted average grant date fair value |  | $ | 63.12 |  |  | $ | 71.97 |  |  | $ | 68.15 |
Changes in stock equivalent units:
(Units in Thousands) |  | Units |  | Weighted Average Grant Date Fair Value
Stock equivalent units at Jan. 1, 2023 |  | 597 |  |  | $ | 41.75 |
Granted |  | 38 |  |  | 63.12 |
Units distributed |  | (134) |  |  | 33.90 |
Dividend equivalents |  | 16 |  |  | 64.95 |
Stock equivalent units at Dec. 31, 2023 |  | 517 |  |  | 46.07 |
TSR Liability Awards | Liability awards granted:
(In Thousands) |  | 2023 |  | 2022 |  | 2021
Awards granted |  | 216 |  |  | 165 |  |  | 221 |
Liability awards settled:
(Units In Thousands, Settlement Amount in Millions) |  | 2023 |  | 2022 |  | 2021
Awards settled |  | 282 |  |  | 411 |  |  | 446 |
Settlement amount (cash, common stock and deferred amounts) |  | $ | 19 |  |  | $ | 27 |  |  | $ | 27 |
Compensation costs related to share-based awards | Compensation costs related to share-based awards:
(Millions of Dollars) |  | 2023 |  | 2022 |  | 2021
Cost for share-based awards (a) |  | $ | 27 |  |  | $ | 36 |  |  | $ | 31 |
Tax benefit recognized in income |  | 7 |  |  | 9 |  |  | 8 |
(a)Compensation costs for share-based payments are included in O&M expense. Amount for equity awards (non-cash) was $25 million in 2023.

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock awards granted to nonemployee directors that were outstanding at the beginning and end of the year, and the number of awards that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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