FAIR VALUE MEASUREMENT (Tables)

9 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents for each of these hierarchy levels, the Company's financial assets and financial liabilities that are measured at fair value on a recurring basis:

	Fair Value Hierarchy	September 30, 2019		December 31, 2018
Assets:
Money market funds	Level I	$	44,931	$	91,852
Investment securities pledged as collateral	Level I	1,936,422		1,462,626
Prepaid forward contracts	Level II	—		109,344
Interest rate swap contracts	Level II	2,634		1,975
Liabilities:
Prepaid forward contracts	Level II	194,643		—
Interest rate swap contracts	Level II	183,644		132,978
Contingent consideration related to 2017 and 2018 acquisitions	Level III	5,142		6,195

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The carrying values, estimated fair values, and classification under the fair value hierarchy of the Company's financial instruments, excluding those that are carried at fair value in the accompanying consolidated balance sheets, are summarized as follows:

		September 30, 2019				December 31, 2018
	Fair Value Hierarchy	Carrying Amount (a)		Estimated Fair Value		Carrying Amount (a)		Estimated Fair Value
CSC Holdings debt instruments:
Credit facility debt	Level II	$	6,632,330	$	6,679,875	$	5,915,559	$	5,972,500
Collateralized indebtedness	Level II	1,423,519		1,423,130		1,406,182		1,374,203
Senior guaranteed notes	Level II	7,600,412		8,136,444		5,847,758		5,646,468
Senior notes and debentures	Level II	7,142,714		7,912,429		8,416,610		8,972,722
Notes payable and supply chain financing	Level II	110,519		110,580		106,108		105,836
Cablevision debt instruments:
Senior notes and debentures	Level II	1,100,698		1,219,360		1,095,193		1,163,843
		$	24,010,192	$	25,481,818	$	22,787,410	$	23,235,572

(a)

Amounts are net of unamortized deferred financing costs and discounts/premiums.