FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
FAIR VALUE MEASUREMENTS:
Debt discount and deferred financing costs	$ 38,200	$ 39,000
Level 2 | Carrying Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	28,530	29,614
Level 2 | Carrying Value | Debt of other operating divisions
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	24,476	25,238
Level 2 | Fair Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	28,530	29,614
Level 2 | Fair Value | Debt of other operating divisions
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	$ 24,476	25,238
Senior Unsecured Notes | 6.125% Senior Unsecured Notes due 2022
FAIR VALUE MEASUREMENTS:
Interest rate	6.125%
Senior Unsecured Notes | 5.875% Senior Unsecured Notes due 2026
FAIR VALUE MEASUREMENTS:
Interest rate	5.875%
Senior Unsecured Notes | 5.625% Senior Unsecured Notes due 2024
FAIR VALUE MEASUREMENTS:
Interest rate	5.625%
Senior Unsecured Notes | 5.375% Senior Unsecured Notes due 2021
FAIR VALUE MEASUREMENTS:
Interest rate	5.375%
Senior Unsecured Notes | 5.125% Senior Unsecured Notes due 2027
FAIR VALUE MEASUREMENTS:
Interest rate	5.125%
Senior Unsecured Notes | Level 2 | Carrying Value | 6.125% Senior Unsecured Notes due 2022
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	$ 500,000	500,000
Senior Unsecured Notes | Level 2 | Carrying Value | 5.875% Senior Unsecured Notes due 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	350,000	350,000
Senior Unsecured Notes | Level 2 | Carrying Value | 5.625% Senior Unsecured Notes due 2024
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	550,000	550,000
Senior Unsecured Notes | Level 2 | Carrying Value | 5.375% Senior Unsecured Notes due 2021
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	600,000	600,000
Senior Unsecured Notes | Level 2 | Carrying Value | 5.125% Senior Unsecured Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	400,000	400,000
Senior Unsecured Notes | Level 2 | Fair Value | 6.125% Senior Unsecured Notes due 2022
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	512,500	515,535
Senior Unsecured Notes | Level 2 | Fair Value | 5.875% Senior Unsecured Notes due 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	346,500	363,475
Senior Unsecured Notes | Level 2 | Fair Value | 5.625% Senior Unsecured Notes due 2024
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	545,875	568,205
Senior Unsecured Notes | Level 2 | Fair Value | 5.375% Senior Unsecured Notes due 2021
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	605,250	610,440
Senior Unsecured Notes | Level 2 | Fair Value | 5.125% Senior Unsecured Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	371,000	396,088
Term Loan | Level 2 | Carrying Value | Term Loan A-1
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	111,354	117,370
Term Loan | Level 2 | Carrying Value | Term Loan A-2
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	108,968	113,327
Term Loan | Level 2 | Carrying Value | Term Loan B
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,352,875	1,356,300
Term Loan | Level 2 | Fair Value | Term Loan A-1
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	111,354	117,370
Term Loan | Level 2 | Fair Value | Term Loan A-2
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	108,968	113,327
Term Loan | Level 2 | Fair Value | Term Loan B
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	$ 1,356,257	$ 1,357,995