XML 41 R73.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Changes in accumulated other comprehensive loss, net of tax      
Balance $ 2,788.6 $ 2,101.8 $ 1,851.3
Net current-period other comprehensive (loss) income (6.3) 11.7 (2.8)
Balance 2,780.4 2,788.6 2,101.8
Accumulated Other Comprehensive Loss      
Changes in accumulated other comprehensive loss, net of tax      
Balance (7.9) (19.6) (16.8)
Other comprehensive (loss) income before reclassifications (4.6) 10.3  
Amounts reclassified from accumulated other comprehensive income (1.7) 1.4  
Net current-period other comprehensive (loss) income (6.3) 11.7  
Balance (14.2) (7.9) (19.6)
Defined Benefit Pension Plan      
Changes in accumulated other comprehensive loss, net of tax      
Balance 12.3 0.2  
Other comprehensive (loss) income before reclassifications (10.6) 10.7  
Amounts reclassified from accumulated other comprehensive income (1.7) 1.4  
Net current-period other comprehensive (loss) income (12.3) 12.1  
Balance   12.3 0.2
Foreign Currency Translation Losses      
Changes in accumulated other comprehensive loss, net of tax      
Balance (17.9) (17.9)  
Balance (17.9) (17.9) (17.9)
Unrealized Gains and (Losses) on Available-for-Sale Securities      
Changes in accumulated other comprehensive loss, net of tax      
Balance (2.3) (1.9)  
Other comprehensive (loss) income before reclassifications 6.0 (0.4)  
Net current-period other comprehensive (loss) income 6.0 (0.4)  
Balance $ 3.7 $ (2.3) $ (1.9)