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Net Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2023
Net Income Per Share |
Schedule of computation of net income per share on a basic and diluted basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(thousands except per share data) |  | 2023 |  | 2022 |  | 2021
Net income attributable to shareholders | ​ | $ | 903,505 | ​ | $ | 1,426,884 | ​ | $ | 1,108,197
Weighted-average shares outstanding - basic | ​ |  | 56,359 | ​ |  | 64,838 | ​ |  | 72,472
Net effect of various dilutive stock-based compensation awards | ​ |  | 676 | ​ |  | 615 | ​ |  | 913
Weighted-average shares outstanding - diluted | ​ |  | 57,035 | ​ |  | 65,453 | ​ |  | 73,385
Net income per share: | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 16.03 | ​ | $ | 22.01 | ​ | $ | 15.29
Diluted (a) | ​ | $ | 15.84 | ​ | $ | 21.80 | ​ | $ | 15.10
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(a) Equity awards excluded from diluted net income per share as their effect would have been anti-dilutive | ​ | ​ | 32 | ​ | ​ | 53 | ​ | ​ | —
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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