Income Taxes Summary of Valuation Allowance (Tables)

12 Months Ended

Dec. 31, 2023

Income Tax Disclosure [Abstract]

Summary of Valuation Allowance [Table Text Block]

The change in the valuation allowance is listed below.

	Years ended December 31,
	2023		2022		2021
Balance at beginning of period	$	145.8	$	146.0	$	197.1
Charged (reversed) to costs and expenses	13.8		8.9		(45.1)
Charged to gross tax assets and other accounts 1	(2.1)		0.6		0.9
Foreign currency translation	5.0		(9.7)		(6.9)
Balance at end of period	$	162.5	$	145.8	$	146.0