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Shareholder's equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 09, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 17, 2021 | Dec. 10, 2020
Stock repurchases |  |  |  |  |  |
Repurchase of common stock (in shares) |  | 13,877,000 | 16,477,000 | 41,020,000 |  |
Value of treasury stock acquired |  | $ 1,546,016 | $ 1,446,767 | $ 2,402,475 |  |
Treasury stock acquired, average cost per share |  | $ 111.41 | $ 87.80 | $ 58.57 |  |
Terminated Remaining Prior Share Repurchases Authorized, Amount |  |  |  |  |  | $ 329,302
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 2,000,000 | $ 2,000,000
Charter documents and Delaware law: |  |  |  |  |  |
Preferred stock, shares authorized (in shares) |  | 5,000,000 | 5,000,000 |  |  |
Period During Which The Company Is Subject To Section 203 Of The Delaware General Corporation Law Limitation |  | 3 years |  |  |  |
Payments to Noncontrolling Interests |  | $ 20,104 | $ 7,831 | $ 68,019 |  |
Treasury stock |  |  |  |  |  |
Stock repurchases |  |  |  |  |  |
Repurchase of common stock (in shares) |  | 13,877,000 | 16,477,000 | 41,020,000 |  |
Value of treasury stock acquired |  | $ 1,546,016 | $ 1,446,767 | $ 2,402,475 |  |
Retirement of treasury stock (in shares) |  | 13,877,000 | 16,477,000 | 41,020,000 |  |
Subsequent Event |  |  |  |  |  |
Stock repurchases |  |  |  |  |  |
Repurchase of common stock (in shares) | 1,437,000 |  |  |  |  |
Value of treasury stock acquired | $ 159,133 |  |  |  |  |
Treasury stock acquired, average cost per share | $ 110.73 |  |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 2,224,806 |  |  |  |  |

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- Definition Period During Which The Company Is Subject To Section 203 Of The Delaware General Corporation Law limitation. The Company is subject to Section 203 of the Delaware General Corporation Law which, subject to exceptions, would prohibit the Company from engaging in any business combinations with any interested stockholder, as defined in that section, for a period three years following the date on which that stockholder became an interested stockholder. + References No definition available. + Details
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- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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