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Income Taxes (Details 3) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of the beginning and ending of unrecognized tax benefits
Balance at January 1	$ 66.8	$ 32.4	$ 67.9
Additions based on tax positions related to the current period	0.5	5.7	7.2
Additions for tax positions of prior periods	58.7	7.3	36.3
Reductions for tax positions of prior periods	(13.6)	(21.8)	(13.3)
Statute expirations	(2.9)	(1.4)	(1.4)
Settlements	4.7	44.6	64.3
Balance at December 31	$ 114.2	$ 66.8	$ 32.4

X

- Definition

Amount of unrecognized tax benefits.

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