CSC HOLDINGS - CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 278,539	$ (1,538)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization (including impairments)	434,857	547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)	455,473
Loss (gain) on derivative contracts, net	53,565	(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039	23,944
Share-based compensation expense	28,281	27,946
Deferred income taxes	29,165	30,225
Decrease in right-of-use assets	10,816	11,474
Provision for doubtful accounts	11,133	19,880
Other	1,074	1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293	(4,458)
Prepaid expenses and other assets	(26,321)	(34,800)
Amounts due from and due to affiliates	4,627	3,894
Accounts payable and accrued liabilities	(29,696)	(165,728)
Deferred revenue	38,501	(5,153)
Liabilities related to interest rate swap contracts	(89,798)	122,849
Net cash provided by operating activities	749,622	593,565
Cash flows from investing activities:
Capital expenditures	(212,791)	(299,082)
Other, net	2,143	1,339
Net cash used in investing activities	(210,648)	(297,743)
Cash flows from financing activities:
Proceeds from long-term debt	150,000	0
Repayment of long-term debt	(225,863)	(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)	0
Principal payments on finance lease obligations	(18,330)	(5,700)
Other	(393)	2,915
Net cash used in financing activities	(597,445)	(752,803)
Net decrease in cash and cash equivalents	(58,471)	(456,981)
Effect of exchange rate changes on cash and cash equivalents	620	(424)
Net decrease in cash and cash equivalents	(57,851)	(457,405)
Cash, cash equivalents and restricted cash at beginning of year	278,686	702,160
Cash, cash equivalents and restricted cash at end of period	220,835	244,755
CSC Holdings
Cash flows from operating activities:
Net income	278,539	10,122
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization (including impairments)	434,857	547,569
Loss (gain) on investments and sale of affiliate interests, net	(73,453)	455,819
Loss (gain) on derivative contracts, net	53,565	(439,861)
Amortization of deferred financing costs and discounts (premiums) on indebtedness	23,039	23,944
Share-based compensation expense	28,281	27,946
Deferred income taxes	29,165	172,835
Decrease in right-of-use assets	10,816	11,474
Provision for doubtful accounts	11,133	19,880
Other	1,074	1,849
Change in assets and liabilities, net of effects of acquisitions and dispositions:
Accounts receivable, trade	55,293	(4,458)
Prepaid expenses and other assets	(26,321)	(34,800)
Amounts due from and due to affiliates	3,882	(147,183)
Accounts payable and accrued liabilities	(29,611)	(165,723)
Deferred revenue	38,501	(5,153)
Liabilities related to interest rate swap contracts	(89,798)	122,849
Net cash provided by operating activities	748,962	597,109
Cash flows from investing activities:
Capital expenditures	(212,791)	(299,082)
Other, net	2,143	(2,669)
Net cash used in investing activities	(210,648)	(301,751)
Cash flows from financing activities:
Proceeds from long-term debt	150,000	0
Repayment of long-term debt	(225,863)	(18,183)
Proceeds from collateralized indebtedness and related derivative contracts, net	185,105	0
Repayment of collateralized indebtedness and related derivative contracts, net	(185,105)	0
Distributions to parent	501,000	720,350
Principal payments on finance lease obligations	(18,330)	(5,700)
Other	1,465	4,947
Net cash used in financing activities	(596,658)	(749,180)
Net decrease in cash and cash equivalents	(58,344)	(453,822)
Effect of exchange rate changes on cash and cash equivalents	620	(424)
Net decrease in cash and cash equivalents	(57,724)	(454,246)
Cash, cash equivalents and restricted cash at beginning of year	278,202	698,003
Cash, cash equivalents and restricted cash at end of period	$ 220,478	$ 243,757