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Equity (Issuances) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023 | Aug. 31, 2022
Stock compensation awards |  |  |
Class of Stock [Line Items] |  |  |
Stock issued (in shares) | 484,041 | 808,479 |
Proceeds received, net of offering costs | $ 28 | $ 39 |
In lieu of dividend payment |  |  |
Class of Stock [Line Items] |  |  |
Stock issued (in shares) | 60,691 | 128,005 |
Proceeds received, net of offering costs | $ 4 | $ 9 |
401(K) |  |  |
Class of Stock [Line Items] |  |  |
Stock issued (in shares) | 41,000 | 70,000 |
Proceeds received, net of offering costs | $ 3 | $ 5 |
Employee Stock Purchase Plan |  |  |
Class of Stock [Line Items] |  |  |
Stock issued (in shares) |  | 26,481 |
Proceeds received, net of offering costs |  | $ 2 |
At-the-market Program (ATM) |  |  |
Class of Stock [Line Items] |  |  |
Aggregate sale price |  |  | $ 500

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