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Shareholders' Equity (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | May 31, 2021
Schedule of Equity [Line Items] |  |  |  |
Purchase for treasury | $ 1,500.0 | $ 1,250.0 | $ 500.0 |
Preferred stock, shares authorized (in shares) | 5,000,000 |  |  |
Shares issued (in shares) | 0 | 0 |  |
Shares held in employee trust (in shares) | 50,000,000 | 50,000,000 |  |
Employee benefit trust | $ 3,013.2 | $ 3,013.2 |  |
May 2021 Share Repurchase Program |  |  |  |
Schedule of Equity [Line Items] |  |  |  |
Remaining authorized repurchase amount | $ 3,250.0 |  |  |
Stock repurchase program, authorized amount |  |  |  | $ 5,000.0

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