Accumulated Other Comprehensive Loss Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2020

Accumulated Other Comprehensive Loss [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Postretirement Benefit Plans		Cumulative Translation Adjustment		Accumulated Other Comprehensive Loss
As of December 31, 2017	$	(137.6)	$	(210.6)	$	(348.2)
Net change during period	6.0		(33.3)		(27.3)
As of December 31, 2018	(131.6)		(243.9)		(375.5)
Net change during period	(1.7)		(8.1)		(9.8)
As of December 31, 2019	(133.3)		(252.0)		(385.3)
Net change during period	77.4		28.5		105.9
As of December 31, 2020	$	(55.9)	$	(223.5)	$	(279.4)