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Shareholders' Equity - Share repurchase program (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Aggregate cost of shares repurchased	$ 1,234,294	$ 83,472	$ 2,871
Number of shares repurchased (shares)	31,486,830	2,850,102	110,598
Average price per share repurchased	$ 39.20	$ 29.29	$ 25.96
Common shares held in treasury (shares)	204,365,956	172,280,199	168,997,994
Common shares held in treasury, at cost	$ 3,761,095	$ 2,503,909
Common shares
Class of Stock [Line Items]
Remaining share repurchase authorization	$ 1,200,000
Cumulative number of shares acquired since inception of share repurchase program	420,700,000
Aggregate purchase price of shares acquired since inception of share repurchase program	$ 5,300,000

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Cumulative number of shares that have been repurchased since the inception of the share repurchase program.

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Aggregate cumulative purchase price of common and preferred stock that have been repurchased since the inception of the share repurchase program.

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Amount remaining of a stock repurchase plan authorized.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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