Income Taxes Summary of Valuation Allowance (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Summary of Valuation Allowance [Table Text Block]

The change in the valuation allowance is listed below.

	Years ended December 31,
	2020		2019		2018
Balance at beginning of period	$	164.2	$	211.0	$	243.0
Charged (reversed ) to costs and expenses	17.3		(24.9)		(28.0)
Charged (reversed) to gross tax assets and other accounts 1	9.9		(19.8)		5.1
Foreign currency translation	5.7		(2.1)		(9.1)
Balance at end of period	$	197.1	$	164.2	$	211.0