LONG-TERM DEBT, NET - Components of Exchangeable Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Liability component:
Principal	$ 3,892,500	$ 3,292,500
Less: unamortized original issue discount	312,891	357,887
Net carrying value of the liability component	3,534,706	2,889,626
2022 Exchangeable Notes \| Senior Notes
Liability component:
Principal	517,500	517,500
Less: unamortized original issue discount	26,525	40,768
Net carrying value of the liability component	490,975	476,732
Equity component	70,363	70,363
2026 Exchangeable Notes \| Senior Notes
Liability component:
Principal	575,000	575,000
Less: unamortized original issue discount	111,806	129,037
Net carrying value of the liability component	463,194	445,963
Equity component	138,796	138,796
2030 Exchangeable Notes \| Senior Notes
Liability component:
Principal	575,000	575,000
Less: unamortized original issue discount	168,531	181,800
Net carrying value of the liability component	406,469	393,200
Equity component	$ 189,213	$ 189,213

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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