LONG-TERM DEBT AND LEASE OBLIGATIONS - Credit Agreement and Letter of Credit Facility (Details)
|
3 Months Ended |
|
Mar. 31, 2018
USD ($)
|
|---|
| Credit Agreement |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Revolving credit facility, maximum borrowing capacity (up to) |
$ 1,000,000,000
|
| Line of credit facility, subfacility maximum available capacity |
300,000,000
|
| Borrowings outstanding |
0
|
| Standby letters of credit outstanding |
2,000,000
|
| Amount available for borrowing under revolving credit facility |
$ 998,000,000
|
| Credit Agreement | Minimum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Unused commitment fee |
0.25%
|
| Credit Agreement | Maximum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Unused commitment fee |
0.375%
|
| Credit Agreement | Base rate | Minimum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Margin on variable rate |
0.25%
|
| Credit Agreement | Base rate | Maximum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Margin on variable rate |
0.75%
|
| Credit Agreement | LIBOR | Minimum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Margin on variable rate |
1.25%
|
| Credit Agreement | LIBOR | Maximum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Margin on variable rate |
1.75%
|
| Letter of Credit Facility |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Revolving credit facility, maximum borrowing capacity (up to) |
$ 180,000,000
|
| Unused commitment fee |
0.25%
|
| Standby letters of credit outstanding |
$ 100,000,000
|
| Borrowing capacity after increase subject to certain conditions (up to) |
$ 200,000,000
|
| Secured debt to EBITDA ratio |
3.00
|
| Issuance fee |
1.50%
|
| Issuance fee, based on face amount |
0.125%
|
| Letter of Credit Facility | Maximum |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Number of business days after notice, for reimbursement of amount drawn |
3 days
|
| Unused commitment fee after step down (up to) |
0.375%
|
| Letter of Credit Facility | Base rate |
|
| LONG-TERM DEBT AND LEASE OBLIGATIONS |
|
| Margin on variable rate |
0.50%
|