v3.19.3.a.u2
CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statements of Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Net earnings (loss) $ (13.5) $ (54.8) $ 49.4 $ (130.2) $ 170.6 $ (100.4) $ 22.2 $ 17.7 $ (149.1) $ 110.1 $ (487.2)
Unrealized foreign currency translation adjustment, net of tax                 (16.5) (127.7) 131.7
Realized loss on foreign currency transactions reclassified into other expense, net of tax                 0.5 1.0  
Pension and other benefit adjustments:                      
Net gain (loss) arising during the period, net of tax                 (15.5) 4.2 (3.0)
Marketable securities:                      
Unrealized holding gains arising during the period, net of tax                   0.2 0.7
Realized net gain reclassified into investment income, net of tax                     (0.4)
Equity method investee's cash flow hedge:                      
Unrealized holding (loss) gain arising during the period                 (0.1) 0.2  
Realized net gain reclassified into equity in earnings of non-consolidated entities, net of tax                   (2.2) (0.9)
Other comprehensive income (loss):                 (31.6) (124.5) 128.1
Total comprehensive loss                 (180.7) (14.4) (359.1)
Consolidating Adjustments                      
Net earnings (loss)                 534.2 (28.2) 427.4
Equity in other comprehensive income (loss) of subsidiaries                 14.4 223.6 (240.2)
Equity method investee's cash flow hedge:                      
Other comprehensive income (loss):                 14.4 223.6 (240.2)
Total comprehensive loss                 548.6 195.4 187.2
AMCE                      
Net earnings (loss)                 (149.1) 110.1 (487.2)
Equity in other comprehensive income (loss) of subsidiaries                 (31.6) (124.5) 128.1
Equity method investee's cash flow hedge:                      
Other comprehensive income (loss):                 (31.6) (124.5) 128.1
Total comprehensive loss                 (180.7) (14.4) (359.1)
Subsidiary Guarantors                      
Net earnings (loss)                 (382.9) 14.5 (472.5)
Equity in other comprehensive income (loss) of subsidiaries                 17.2 (99.1) 112.1
Unrealized foreign currency translation adjustment, net of tax                 (44.1) (30.7) 22.0
Realized loss on foreign currency transactions reclassified into other expense, net of tax                 0.5 1.0  
Pension and other benefit adjustments:                      
Net gain (loss) arising during the period, net of tax                 (5.1) 6.3 (5.4)
Marketable securities:                      
Unrealized holding gains arising during the period, net of tax                   0.2 0.7
Realized net gain reclassified into investment income, net of tax                     (0.4)
Equity method investee's cash flow hedge:                      
Unrealized holding (loss) gain arising during the period                 (0.1)    
Realized net gain reclassified into equity in earnings of non-consolidated entities, net of tax                   (2.2) (0.9)
Other comprehensive income (loss):                 (31.6) (124.5) 128.1
Total comprehensive loss                 (414.5) (110.0) (344.4)
Subsidiary Non-Guarantors                      
Net earnings (loss)                 (151.3) 13.7 45.1
Unrealized foreign currency translation adjustment, net of tax                 27.6 (97.0) 109.7
Pension and other benefit adjustments:                      
Net gain (loss) arising during the period, net of tax                 (10.4) (2.1) 2.4
Equity method investee's cash flow hedge:                      
Other comprehensive income (loss):                 17.2 (99.1) 112.1
Total comprehensive loss                 $ (134.1) $ (85.4) $ 157.2