Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Supplemental Schedule of Noncash Investing and Financing Activities
Cash dividends declared, but not yet paid	$ 4.1	$ 4.1	$ 4.1	$ 4.1
Beneficial interest obtained in exchange for accounts receivable sold	$ 122.5	$ 83.2	$ 241.5	$ 157.1

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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