Income Taxes Summary of Valuation Allowance (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Summary of Valuation Allowance [Table Text Block]

The change in the valuation allowance is listed below.

	Years ended December 31,
	2019			2018			2017
Balance at beginning of period	$	211.0		$	243.0		$	255.6
Reversed to costs and expenses	(24.9		)	(28.0		)	(4.6		)
(Reversed) charged to gross tax assets and other accounts 1	(19.8		)	5.1			(27.3		)
Foreign currency translation	(2.1		)	(9.1		)	19.3
Balance at end of period	$	164.2		$	211.0		$	243.0