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Supplemental Financial Information (Other Current Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Supplemental Financial Information [Abstract]
Prepaid taxes	$ 47.4	$ 44.4
Prepaid expenses	27.1	23.1
Other Deferred Costs, Net	57.9	26.9
Other	26.6	23.4
Other current assets	$ 159.0	$ 117.8

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Amount of current assets classified as other.

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