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Shareholders' Equity - Share repurchase program (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |
Aggregate cost of shares repurchased | $ 585,823 | $ 1,234,294 | $ 83,472
Number of shares repurchased (shares) | 12,891,405 | 31,486,830 | 2,850,102
Average price per share repurchased | $ 45.44 | $ 39.20 | $ 29.29
Common shares held in treasury (shares) | 217,904,765 | 204,365,956 | 172,280,199
Common shares held in treasury, at cost | $ 4,377,920 | $ 3,761,095 |
Common shares |  |  |
Class of Stock [Line Items] |  |  |
Remaining share repurchase authorization | $ 1,000,000 |  |
Cumulative number of shares acquired since inception of share repurchase program | 433,600,000 |  |
Aggregate purchase price of shares acquired since inception of share repurchase program | $ 5,900,000 |  |

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- Definition Aggregate cumulative purchase price of common and preferred stock that have been repurchased since the inception of the share repurchase program. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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