Debt - Revolving Credit Facilities (Details) |
Mar. 31, 2020
USD ($)
|
|---|---|
| Line of Credit Facility [Line Items] | |
| Senior Secured Domestic Revolving Credit Facility | $ 1,680,300,000 |
| Total Outstanding | 256,600,000 |
| Total Available | 1,405,800,000 |
| Standby letters of credit issued | 17,900,000 |
| Senior Secured Domestic Revolving Credit Facility | |
| Line of Credit Facility [Line Items] | |
| Senior Secured Domestic Revolving Credit Facility | 1,450,000,000.0 |
| Total Outstanding | 170,000,000.0 |
| Total Available | 1,262,100,000 |
| Senior Secured International Revolving Credit Facility | |
| Line of Credit Facility [Line Items] | |
| Senior Secured Domestic Revolving Credit Facility | 174,600,000 |
| Total Outstanding | 73,000,000.0 |
| Total Available | 101,600,000 |
| Other International Facilities | |
| Line of Credit Facility [Line Items] | |
| Senior Secured Domestic Revolving Credit Facility | 55,700,000 |
| Total Outstanding | 13,600,000 |
| Total Available | $ 42,100,000 |