XML 59 R47.htm IDEA: XBRL DOCUMENT v3.10.0.1
Changes in Shareholders' Equity Changes in Shareholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Stockholders' Equity Attributable to Parent $ 2,045.7   $ 2,045.7    
Net Income     91.4    
Other Comprehensive Income (Loss) (47.3) $ 22.5 (143.0) $ 39.6  
Total Comprehensive Income (Loss) $ (9.7) $ 59.1 (51.6) $ 75.9  
Cash Dividends and Dividend Equivalents to Shareholders ($0.24 per share)     $ (24.9)    
Dividends Paid to Shareholders Per Share (in dollars per share) $ 0.24 $ 0.24 $ 0.48 $ 0.48  
Equity-based Compensation Cost     $ 8.1    
Equity-based Awards, Net of Shares Exchanged     (1.5)    
Stockholders' Equity Attributable to Parent     $ 2,115.6    
AOCI Attributable to Parent [Member] | Accounting Standards Update 2016-01 [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         $ (17.7)
AOCI Attributable to Parent [Member] | Accounting Standards Update 2018-02 [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         35.9
Retained Earnings [Member] | Accounting Standards Update 2016-01 [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         17.7
Retained Earnings [Member] | Accounting Standards Update 2018-02 [Member]          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Cumulative Effect of New Accounting Principle in Period of Adoption         $ (35.9)