CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Statement of Cash Flows [Abstract] | |||
| Cash and cash equivalents | $ 8,142.4 | $ 1,480.5 | $ 1,672.4 |
| Restricted cash included in other current assets and other assets, net | 38.5 | 15.9 | 8.3 |
| Restricted cash included in current and long-term assets of discontinued operations | 0.0 | 1.9 | 2.1 |
| Total cash and cash equivalents and restricted cash | $ 8,180.9 | $ 1,498.3 | $ 1,682.8 |