CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 141,762	$ 86,969
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	370,872	398,547
Equity in losses (earnings) of unconsolidated affiliates, net	(11,181)	2,580
Loss from partial redemption of debt	0	5,044
Loss (gain) and impairment on marketable investment securities, net	(8,179)	11,408
Stock-based compensation	11,953	16,204
Deferred tax provision	71,422	63,421
Dividends received from unconsolidated entities	15,000	5,000
Proceeds from sale of trading securities	7,140	380
Changes in current assets and current liabilities, net	(47,013)	(274)
Changes in noncurrent assets and noncurrent liabilities, net	8,097	3,457
Other, net	14,836	15,187
Net cash flows from operating activities	574,709	607,923
Cash Flows from Investing Activities:
Purchases of marketable investment securities	(883,288)	(345,391)
Sales and maturities of marketable investment securities	643,865	669,393
Purchases of property and equipment	(533,669)	(585,902)
Refunds and other receipts related to capital expenditures	24,087	105,750
Changes in restricted cash and marketable investment securities	7,351	(313)
Investments in unconsolidated entities	(1,636)	(64,655)
Acquisition of regulatory authorization	0	(3,428)
Expenditures for externally marketed software	(17,991)	(16,905)
Other, net	1,462	(50)
Net cash flows from investing activities	(759,819)	(241,501)
Cash Flows from Financing Activities:
Proceeds from issuance of long-term debt	1,500,000	0
Payments of debt issuance costs	(6,275)	0
Repayment of 6 1/2% Senior Secured Notes Due 2019 and related premium	0	(113,300)
Repayment of other debt and capital lease obligations	(30,615)	(35,303)
Net proceeds from Class A common stock options exercised and stock issued under the Employee Stock Purchase Plan	16,157	19,893
Other, net	(3,373)	1,525
Net cash flows from financing activities	1,475,894	(127,185)
Effect of exchange rates on cash and cash equivalents	684	(9,185)
Net increase in cash and cash equivalents	1,291,468	230,052
Cash and cash equivalents, beginning of period	924,240	549,053
Cash and cash equivalents, end of period	2,215,708	779,105
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest (including capitalized interest)	97,044	102,335
Capitalized interest	70,386	44,335
Cash paid for income taxes	9,187	5,185
Employee benefits paid in Class A common stock	11,126	10,711
Property and equipment financed under capital lease obligations	7,172	5,551
Increase (decrease) in capital expenditures included in accounts payable, net	21,951	10,297
Reduction of capital lease obligation for AMC-15 and AMC-16 satellites	$ 0	$ 4,500