Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Millions, $ in Millions | Total | Common Stock | Retained Earnings | Accumulated Other Comprehensive Loss |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 46.2 | | |
Stockholders' Equity Attributable to Parent | $ 640.3 | $ 7.3 | $ 634.3 | $ (1.3) |
Shares outstanding, beginning (in shares) at Dec. 31, 2017 | | 46.2 | | |
Shareholders' equity, beginning at Dec. 31, 2017 | 640.3 | $ 7.3 | 634.3 | (1.3) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 182 | | 182 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Repurchase of common stock (in shares) | | (5.7) | | |
Repurchase of common stock | (501.5) | $ (13.5) | (488) | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | (0.1) | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | (12.9) | $ 0 | (12.9) | |
Issuance of restricted stock awards, net of forfeitures (in shares) | | 0.1 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | 0 | $ 0 | | |
Stock-based compensation | 6.2 | $ 6.2 | | |
Other | 0.4 | | | 0.4 |
Shares outstanding, ending (in shares) at Mar. 31, 2018 | | 40.6 | | |
Shareholders' equity, ending at Mar. 31, 2018 | 344.2 | $ 0 | 345.1 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 46.2 | | |
Stockholders' Equity Attributable to Parent | 640.3 | $ 7.3 | 634.3 | (1.3) |
Net income | 182 | | 182 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Stock-based compensation | 6.2 | $ 6.2 | | |
Other | 0.4 | | | 0.4 |
Repurchase of common stock (in shares) | | 5.7 | | |
Repurchase aggregate cost | 501.5 | $ 13.5 | 488 | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | (0.1) | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | 12.9 | $ 0 | 12.9 | |
Shares outstanding, beginning (in shares) at Dec. 31, 2017 | | 46.2 | | |
Shareholders' equity, beginning at Dec. 31, 2017 | 640.3 | $ 7.3 | 634.3 | (1.3) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 341.4 | | | |
Shares outstanding, ending (in shares) at Sep. 30, 2018 | | 40.7 | | |
Shareholders' equity, ending at Sep. 30, 2018 | 514.7 | $ 11.5 | 504.1 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 46.2 | | |
Stockholders' Equity Attributable to Parent | 640.3 | $ 7.3 | 634.3 | (1.3) |
Net income | 341.4 | | | |
Adoption of new ASC | | | 29.7 | |
Adoption of new ASC | Accounting Standards Update 2014-09 | 29.7 | | | |
Shares, Outstanding | | 40.6 | | |
Stockholders' Equity Attributable to Parent | 344.2 | $ 0 | 345.1 | (0.9) |
Shares outstanding, beginning (in shares) at Mar. 31, 2018 | | 40.6 | | |
Shareholders' equity, beginning at Mar. 31, 2018 | 344.2 | $ 0 | 345.1 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 103.1 | | 103.1 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Repurchase of common stock (in shares) | | 0 | | |
Repurchase of common stock | (0.3) | $ (0.3) | | |
Stock-based compensation | 6.4 | 6.4 | | |
Other | (0.2) | $ (0.1) | (0.1) | |
Shares outstanding, ending (in shares) at Jun. 30, 2018 | | 40.7 | | |
Shareholders' equity, ending at Jun. 30, 2018 | 453.2 | $ 6 | 448.1 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40.6 | | |
Stockholders' Equity Attributable to Parent | 344.2 | $ 0 | 345.1 | (0.9) |
Net income | 103.1 | | 103.1 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Stock-based compensation | 6.4 | 6.4 | | |
Other | (0.2) | $ (0.1) | (0.1) | |
Repurchase of common stock (in shares) | | 0 | | |
Repurchase aggregate cost | 0.3 | $ 0.3 | | |
Shares, Outstanding | | 40.7 | | |
Stockholders' Equity Attributable to Parent | 453.2 | $ 6 | 448.1 | (0.9) |
Net income | 56.3 | | 56.3 | |
Issuance of common stock (in shares) | | 0 | | |
Issuance of common stock | 1.5 | $ 1.5 | | |
Stock-based compensation | 3.9 | 3.9 | | |
Other | (0.2) | $ 0.1 | (0.3) | |
Shares outstanding, ending (in shares) at Sep. 30, 2018 | | 40.7 | | |
Shareholders' equity, ending at Sep. 30, 2018 | 514.7 | $ 11.5 | 504.1 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40.7 | | |
Stockholders' Equity Attributable to Parent | 453.2 | $ 6 | 448.1 | (0.9) |
Net income | 56.3 | | 56.3 | |
Issuance of common stock (in shares) | | 0 | | |
Issuance of common stock | 1.5 | $ 1.5 | | |
Stock-based compensation | 3.9 | 3.9 | | |
Other | (0.2) | $ 0.1 | (0.3) | |
Shares, Outstanding | | 40.7 | | |
Stockholders' Equity Attributable to Parent | 514.7 | $ 11.5 | 504.1 | (0.9) |
Common stock, no par value; 150.0 shares authorized; 39.9 shares issued and outstanding at September 30, 2019 and 40.4 shares at December 31, 2018 | 0 | | | |
Shares, Outstanding | | 40.4 | | |
Stockholders' Equity Attributable to Parent | 473.3 | $ 0 | 474.2 | (0.9) |
Shares outstanding, beginning (in shares) at Dec. 31, 2018 | | 40.4 | | |
Shareholders' equity, beginning at Dec. 31, 2018 | 473.3 | $ 0 | 474.2 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 11.6 | | 11.6 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Repurchase of common stock (in shares) | | (0.3) | | |
Repurchase of common stock | (25) | $ (4.7) | (20.3) | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | (0.1) | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | (7.6) | $ 0 | (7.6) | |
Issuance of restricted stock awards, net of forfeitures (in shares) | | 0.1 | | |
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures | 0 | $ 0 | | |
Stock-based compensation | 4.7 | $ 4.7 | | |
Other | 0.2 | | 0.2 | |
Shares outstanding, ending (in shares) at Mar. 31, 2019 | | 40.2 | | |
Shareholders' equity, ending at Mar. 31, 2019 | 456.9 | $ 0 | 457.8 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40.4 | | |
Stockholders' Equity Attributable to Parent | 473.3 | $ 0 | 474.2 | (0.9) |
Net income | 11.6 | | 11.6 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 0 | $ 0 | | |
Stock-based compensation | 4.7 | $ 4.7 | | |
Other | 0.2 | | 0.2 | |
Repurchase of common stock (in shares) | | 0.3 | | |
Repurchase aggregate cost | 25 | $ 4.7 | 20.3 | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | (0.1) | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | 7.6 | $ 0 | 7.6 | |
Shares outstanding, beginning (in shares) at Dec. 31, 2018 | | 40.4 | | |
Shareholders' equity, beginning at Dec. 31, 2018 | 473.3 | $ 0 | 474.2 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 133.5 | | | |
Shares outstanding, ending (in shares) at Sep. 30, 2019 | | 39.9 | | |
Shareholders' equity, ending at Sep. 30, 2019 | 550.4 | $ 0 | 551.3 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40.4 | | |
Stockholders' Equity Attributable to Parent | 550.4 | $ 0 | 474.2 | (0.9) |
Net income | 133.5 | | | |
Adoption of new ASC | | | (0.3) | |
Adoption of new ASC | Accounting Standards Update 2016-02 | (0.3) | | | |
Shares, Outstanding | | 40.2 | | |
Stockholders' Equity Attributable to Parent | 456.9 | $ 0 | 457.8 | (0.9) |
Shares outstanding, beginning (in shares) at Mar. 31, 2019 | | 40.2 | | |
Shareholders' equity, beginning at Mar. 31, 2019 | 456.9 | $ 0 | 457.8 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Net income | 107.1 | | 107.1 | |
Repurchase of common stock (in shares) | | (0.2) | | |
Repurchase of common stock | (18) | $ (4.4) | (13.6) | |
Stock-based compensation | 7.4 | 7.4 | | |
Other | (0.1) | $ (0.1) | | |
Shares outstanding, ending (in shares) at Jun. 30, 2019 | | 40 | | |
Shareholders' equity, ending at Jun. 30, 2019 | 553.3 | $ 2.9 | 551.3 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40.2 | | |
Stockholders' Equity Attributable to Parent | 456.9 | $ 0 | 457.8 | (0.9) |
Net income | 107.1 | | 107.1 | |
Stock-based compensation | 7.4 | 7.4 | | |
Other | (0.1) | $ (0.1) | | |
Repurchase of common stock (in shares) | | 0.2 | | |
Repurchase aggregate cost | 18 | $ 4.4 | 13.6 | |
Shares, Outstanding | | 40 | | |
Stockholders' Equity Attributable to Parent | 553.3 | $ 2.9 | 551.3 | (0.9) |
Net income | 14.8 | | 14.8 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 1.9 | $ 1.9 | | |
Repurchase of common stock (in shares) | | (0.2) | | |
Repurchase of common stock | (25) | $ (10.4) | (14.6) | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | 0 | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | (0.1) | $ 0 | (0.1) | |
Stock-based compensation | | 5.5 | | |
Other | 0 | $ 0.1 | (0.1) | |
Shares outstanding, ending (in shares) at Sep. 30, 2019 | | 39.9 | | |
Shareholders' equity, ending at Sep. 30, 2019 | 550.4 | $ 0 | 551.3 | (0.9) |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | |
Shares, Outstanding | | 40 | | |
Stockholders' Equity Attributable to Parent | 550.4 | $ 2.9 | 551.3 | (0.9) |
Net income | 14.8 | | 14.8 | |
Issuance of common stock (in shares) | | 0.1 | | |
Issuance of common stock | 1.9 | $ 1.9 | | |
Stock-based compensation | | 5.5 | | |
Other | 0 | $ 0.1 | (0.1) | |
Repurchase of common stock (in shares) | | 0.2 | | |
Repurchase aggregate cost | 25 | $ 10.4 | 14.6 | |
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings | | 0 | | |
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures | 0.1 | $ 0 | 0.1 | |
Common stock, no par value; 150.0 shares authorized; 39.9 shares issued and outstanding at September 30, 2019 and 40.4 shares at December 31, 2018 | 0 | | | |
Shares, Outstanding | | 39.9 | | |
Stockholders' Equity Attributable to Parent | $ 550.4 | $ 0 | $ 551.3 | $ (0.9) |