Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Supplemental Schedule of Noncash Investing and Financing Activities | ||
| Cash dividends declared, but not yet paid | $ 4.0 | $ 4.1 |
| Beneficial interest obtained in exchange for accounts receivable sold | $ 121.3 | $ 74.0 |