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Income Taxes Schedule of Unrecognized Tax Benefits Activity (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Unrecognized Tax Benefits Activity [Table Text Block]

The table below summarizes the activity related to our unrecognized tax benefits.

			Years ended December 31,
			2020						2019						2018
Balance at beginning of period			$	345.3					$	335.4					$	271.9
Increases as a result of tax positions taken during a prior year			18.1						22.7						65.9
Decreases as a result of tax positions taken during a prior year			(165.7)						(25.8)						(10.8)
Settlements with taxing authorities			(6.2)						(8.1)						(6.5)
Lapse of statutes of limitation			(0.7)						(0.6)						(1.7)
Increases as a result of tax positions taken during the current year			26.8						21.7						16.6
Balance at end of period			$	217.6					$	345.3					$	335.4

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Schedule of Unrecognized Tax Benefits Activity [Table Text Block]

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