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Shareholders' Equity | 6 Months Ended
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Jun. 30, 2018
Stockholders' Equity Note [Abstract] |
Shareholders’ equity | Shareholders’ equity During the six months ended June 30, 2018, we declared cash dividends totaling $52.0 million and repurchased 3.5 million shares under our repurchase authorization for $105.1 million. For the six months ended June 30, 2017, we declared cash dividends totaling $56.9 million and repurchased 17.5 million shares under our repurchase authorization for $399.9 million. At June 30, 2018, we had remaining authorization to repurchase $489.3 million of common shares. Under our share-based compensation plans, we accept shares as payment under certain conditions related to stock option exercises and vesting of shares, generally related to the payment of minimum tax obligations. During the six months ended June 30, 2018 and 2017, participants surrendered shares valued at $7.4 million and $5.9 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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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