CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 261,763	$ 267,109
Accounts receivable, net of allowance of $49,549 in 2018 and $48,450 in 2017	1,419,039	1,508,370
Prepaid expenses	245,444	209,330
Other current assets	97,127	82,538
Total Current Assets	2,023,373	2,067,347
PROPERTY, PLANT AND EQUIPMENT
Structures, net	1,084,611	1,180,882
Other property, plant and equipment, net	670,668	703,832
INTANGIBLE ASSETS AND GOODWILL
Indefinite-lived intangibles - licenses	2,451,288	2,451,813
Indefinite-lived intangibles - permits	977,152	977,152
Other intangibles, net	457,051	550,056
Goodwill	4,043,910	4,051,082
OTHER ASSETS
Other assets	278,193	278,267
Total Assets	11,986,246	12,260,431
CURRENT LIABILITIES
Accounts payable	149,978	163,449
Accrued expenses	729,284	764,275
Accrued interest	1,937	268,102
Total deferred income, current portion	236,818	186,404
Current portion of long-term debt	125,429	14,972,367
Total Current Liabilities	1,243,446	16,354,597
Long-term debt	5,272,099	5,676,814
Deferred income taxes	365,906	959,390
Other long-term liabilities	495,496	613,974
Liabilities subject to compromise	16,471,629	0
Commitments and contingent liabilities (Note 5)
STOCKHOLDERS’ DEFICIT
Noncontrolling interest	17,861	41,191
Additional paid-in capital	2,073,738	2,072,566
Accumulated deficit	(13,630,329)	(13,142,001)
Accumulated other comprehensive loss	(321,199)	(313,718)
Cost of shares (659,760 in 2018 and 610,991 in 2017) held in treasury	(2,493)	(2,474)
Total Stockholders' Deficit	(11,862,330)	(11,344,344)
Total Liabilities and Stockholders' Deficit	11,986,246	12,260,431
Class A Common Stock
STOCKHOLDERS’ DEFICIT
Common stock issued	32	32
Class B Common Stock
STOCKHOLDERS’ DEFICIT
Common stock issued	1	1
Class C Common Stock
STOCKHOLDERS’ DEFICIT
Common stock issued	59	59
Class D Common Stock
STOCKHOLDERS’ DEFICIT
Common stock issued	$ 0	$ 0

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682