CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 131,629	$ 393,158
Adjustments to reconcile net income to cash provided by operating activities:
Settlement charge	495,000
Settlement payments	(493,775)
Depreciation and amortization	312,632	288,470
Debt redemption and refinancing charges	48,072	97,548
Stock-based compensation expense	28,299	29,699
Tax benefits from stock award exercises	28,040	42,110
Excess tax benefits from stock award exercises	(16,913)	(30,238)
Deferred income taxes	4,418	13,826
Equity investment income, net	5,257	2,257
Other non-cash charges and loss on disposal of assets	24,718	22,861
Changes in operating assets and liabilities, other than from acquisitions and divestitures:
Accounts receivable	(142,950)	(65,079)
Inventories	(22,780)	(10,731)
Other receivables and other current assets	(50,362)	(95,580)
Other long-term assets	378	2,158
Accounts payable	50,823	(46,022)
Accrued compensation and benefits	(26,316)	19,912
Other current liabilities	177,733	31,970
Income taxes	(109,460)	2,886
Other long-term liabilities	(2,912)	(17,707)
Net cash provided by operating activities	441,531	681,498
Cash flows from investing activities:
Additions of property and equipment	(290,873)	(278,593)
Acquisitions	(45,059)	(98,442)
Proceeds from asset and business sales	3,415	215
Purchase of investments available for sale	(3,872)	(6,117)
Purchase of investments held-to-maturity	(1,039,632)	(121,333)
Proceeds from sale of investments available for sale	1,550	1,277
Proceeds from investments held-to-maturity	434,684	64,561
Purchase of intangible assets		(10)
Purchase of equity investments	(7,550)	(4,750)
Distributions received on equity investments		337
Net cash used in investing activities	(947,337)	(442,855)
Cash flows from financing activities:
Borrowings	28,144,986	33,136,743
Payments on long-term debt and other financing costs	(27,476,994)	(32,788,307)
Deferred financing costs and debt redemption and refinancing costs	(58,539)	(106,937)
Purchase of treasury stock	(84,113)
Distributions to noncontrolling interests	(79,040)	(65,818)
Stock award exercises and other share issuances, net	4,680	7,274
Excess tax benefits from stock award exercises	16,913	30,238
Contributions from noncontrolling interests	18,040	28,265
Proceeds from sales of additional noncontrolling interests		933
Purchase of noncontrolling interests	(10,840)	(5,743)
Net cash provided by financing activities	475,093	236,648
Effect of exchange rate changes on cash and cash equivalents	(793)	(567)
Net (decrease) increase in cash and cash equivalents	(31,506)	474,724
Cash and cash equivalents at beginning of the year	965,241	946,249
Cash and cash equivalents at end of the period	$ 933,735	$ 1,420,973