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Supplemental Financial Information (Other Current Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Supplemental Financial Information [Abstract]
Inventory	$ 270.7	$ 278.8
Prepaid taxes	70.2	43.5
Deferred costs	29.7	29.7
Prepaid expenses	19.5	14.2
Derivative asset	0.4	6.8
Other	13.5	8.2
Other current assets	$ 404.0	$ 381.2

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Net amount of other deferred costs capitalized at the end of the reporting period. Does not include deferred finance costs or deferred acquisition costs of insurance companies.

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