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Supplemental Financial Information Supplemental Financial Information (Other Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Supplemental Financial Information [Abstract]
Foreign Currency Transaction Gain (Loss), before Tax	$ (7.5)	$ 4.9	$ (4.9)	$ 1.8
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	3.0	1.7	9.1	3.7
Business Combination, Bargain Purchase, Adjustment	0.0	(53.0)	(6.3)	659.8
Gain on extinguishment of debt	0.0	194.1	3.1	194.1
Other income (expense)	1.4	(0.3)	1.5	(6.0)
Other, net	$ (3.1)	$ 147.4	$ 2.5	$ 853.4

X

- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of expense (reversal of expense) for net periodic benefit cost components, excluding service cost component, of defined benefit plan. Amount includes, but is not limited to, interest cost, expected (return) loss on plan asset, amortization of prior service cost (credit), amortization of (gain) loss, amortization of transition (asset) obligation, settlement (gain) loss, curtailment (gain) loss and certain termination benefits.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Business Combination, Bargain Purchase, Adjustment (Gain) Loss

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Other Nonoperating Income (Expense), Other

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Supplemental Financial Information [Abstract]

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