Debt Instrument, Exchange Price Per Share

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- Definition

Debt Instrument, Exchangeable Shares

+ References

No definition available.

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- Definition

Details of Exchangeable Feature [Abstract]

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

Number of warrants or rights outstanding.

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- Definition

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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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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- Definition

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

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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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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LONG-TERM DEBT - Exchangeable Notes (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 02, 2017
Components of Exchangeable Notes [Abstract]
Less: unamortized original issue discount	$ 357,887
Net carrying value of the liability component	$ 3,540,000
Senior Notes \| 2022 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Approximate Equivalent Exchange Price per Share (USD per share)	$ 152.18
Senior Notes \| 2026 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Approximate Equivalent Exchange Price per Share (USD per share)		$ 302.77
Senior Notes \| 2030 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Approximate Equivalent Exchange Price per Share (USD per share)			$ 291.35
IAC
Components of Exchangeable Notes [Abstract]
Principal	$ 1,667,500	$ 551,989
Less: unamortized original issue discount	351,605	54,025
IAC \| Senior Notes
Components of Exchangeable Notes [Abstract]
Net carrying value of the liability component	$ 1,700,000
IAC \| Senior Notes \| 2022 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Number of shares of the Company's Common Stock into which each $1,000 of Principal of the Exchangeable Notes is Exchangeable (shares)	6.5713
Approximate Equivalent Exchange Price per Share (USD per share)	$ 152.18
Components of Exchangeable Notes [Abstract]
Principal	$ 517,500	517,500		$ 517,500
Less: unamortized original issue discount	40,768	54,025
Net carrying value of the liability component	476,732	463,475
Equity component	70,363	70,363
Interest Expense on Exchangeable Notes [Abstract]
Contractual interest expense	4,528	4,528
Amortization of original issue discount	13,256	13,134
Amortization of debt issuance costs	2,981	3,489
Total interest expense recognized	$ 20,765	21,151
IAC \| Senior Notes \| 2022 Exchangeable Notes \| Exchangeable Notes Hedge
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	3,400,000
Exercise price of warrants (USD per share)	$ 152.18
IAC \| Senior Notes \| 2022 Exchangeable Notes \| Exchangeable Notes Warrants
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	3,400,000
Exercise price of warrants (USD per share)	$ 229.70
IAC \| Senior Notes \| 2026 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Number of shares of the Company's Common Stock into which each $1,000 of Principal of the Exchangeable Notes is Exchangeable (shares)	3.3028
Approximate Equivalent Exchange Price per Share (USD per share)	$ 302.77
Components of Exchangeable Notes [Abstract]
Principal	$ 575,000	0
Less: unamortized original issue discount	129,037
Net carrying value of the liability component	445,963
Equity component	138,796
Interest Expense on Exchangeable Notes [Abstract]
Contractual interest expense	2,963
Amortization of original issue discount	9,759
Amortization of debt issuance costs	758
Total interest expense recognized	$ 13,480
IAC \| Senior Notes \| 2026 Exchangeable Notes \| Exchangeable Notes Hedge
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	1,900,000
Exercise price of warrants (USD per share)	$ 302.77
IAC \| Senior Notes \| 2026 Exchangeable Notes \| Exchangeable Notes Warrants
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	1,900,000
Exercise price of warrants (USD per share)	$ 457.02
IAC \| Senior Notes \| 2030 Exchangeable Notes
Details of Exchangeable Feature [Abstract]
Number of shares of the Company's Common Stock into which each $1,000 of Principal of the Exchangeable Notes is Exchangeable (shares)	3.4323
Approximate Equivalent Exchange Price per Share (USD per share)	$ 291.35
Components of Exchangeable Notes [Abstract]
Principal	$ 575,000	$ 0
Less: unamortized original issue discount	181,800
Net carrying value of the liability component	393,200
Equity component	189,213
Interest Expense on Exchangeable Notes [Abstract]
Contractual interest expense	6,772
Amortization of original issue discount	7,413
Amortization of debt issuance costs	420
Total interest expense recognized	$ 14,605
IAC \| Senior Notes \| 2030 Exchangeable Notes \| Exchangeable Notes Hedge
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	2,000,000.0
Exercise price of warrants (USD per share)	$ 291.35
IAC \| Senior Notes \| 2030 Exchangeable Notes \| Exchangeable Notes Warrants
Interest Expense on Exchangeable Notes [Abstract]
Class of warrant outstanding (shares)	2,000,000.0
Exercise price of warrants (USD per share)	$ 457.02