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Earnings Per Share and Shareholders' Equity Transactions (Narrative) (Details) - USD ($) shares in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Accelerated Share Repurchase Agreement [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Stock repurchase program, available authorized repurchase amount | $ 330,000,000 |  | $ 330,000,000 |
Maximum [Member] | Accelerated Share Repurchase Agreement [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Repurchases common stock, authorized | $ 1,300,000,000 |  | $ 1,300,000,000 |
Stock Compensation Plans [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Antidilutive securities excluded from calculation of earnings per share | 0.4 | 0.7 | 0.4 | 0.6

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