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Shareholders' Equity | 12 Months Ended
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Dec. 31, 2020
Stockholders' Equity Note [Abstract] |
Shareholders' equity | Shareholders’ equity Our declared quarterly cash dividends totaled $135.1 million, $124.4 million, and $108.5 million in 2020, 2019, and 2018, respectively. Under a share repurchase program authorized by our Board of Directors, we repurchased 4.5 million, 8.4 million, and 10.9 million shares in 2020, 2019, and 2018, respectively, for a total of $170.7 million, $274.3 million, and $294.6 million in 2020, 2019, and 2018, respectively. At December 31, 2020, we had remaining authorization to repurchase $354.9 million of common shares. Under our stock compensation plans, we accept shares as payment under certain conditions related to stock option exercises and vesting of restricted shares and share units, generally related to the payment of tax obligations. During 2020, 2019, and 2018, employees surrendered shares valued at $14.9 million, $11.5 million, and $7.9 million, respectively, under these plans. Such share transactions are excluded from the above noted share repurchase authorization.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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