CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 371,769	$ 398,858
Accounts receivable	523,937	733,471
Less: Allowance for credit losses	(17,647)	(23,786)
Accounts receivable, net	506,290	709,685
Prepaid expenses	60,714	60,593
Other current assets	31,860	32,755
Assets held for sale	678,944	0
Total Current Assets	1,649,577	1,201,891
PROPERTY, PLANT AND EQUIPMENT
Structures, net	726,984	953,545
Other property, plant and equipment, net	221,794	257,609
INTANGIBLE ASSETS AND GOODWILL
Indefinite-lived permits	843,849	965,863
Other intangible assets, net	308,175	326,665
Goodwill	698,022	704,158
OTHER ASSETS
Operating lease right-of-use assets	1,617,038	1,885,482
Other assets	58,971	98,075
Total Assets	6,124,410	6,393,288
CURRENT LIABILITIES
Accounts payable	129,631	94,588
Accrued expenses	328,326	503,939
Current operating lease liabilities	319,170	387,882
Deferred revenue	99,066	84,035
Accrued interest	31,471	89,786
Current portion of long-term debt	20,303	20,294
Liabilities held for sale	384,055	0
Total Current Liabilities	1,312,022	1,180,524
NON-CURRENT LIABILITIES
Long-term debt	5,210,627	5,063,724
Mandatorily-redeemable preferred stock	46,421	44,912
Non-current operating lease liabilities	1,316,735	1,559,743
Deferred tax liability	434,187	416,066
Other long-term liabilities	167,961	183,025
Total Liabilities	8,487,953	8,447,994
Commitments and Contingencies (Note 6)
STOCKHOLDERS’ DEFICIT
Noncontrolling interest	138,755	152,814
Common stock, par value $0.01 per share: 2,350,000,000 shares authorized; 466,914,142 shares issued as of March 31, 2020; 466,744,939 shares issued as of December 31, 2019	4,669	4,667
Additional paid-in capital	3,493,369	3,489,593
Accumulated deficit	(5,634,283)	(5,349,611)
Accumulated other comprehensive loss	(363,722)	(349,552)
Treasury stock (506,250 shares held as of March 31, 2020; 504,650 shares held as of December 31, 2019)	(2,331)	(2,617)
Total Stockholders' Deficit	(2,363,543)	(2,054,706)
Total Liabilities and Stockholders' Deficit	$ 6,124,410	$ 6,393,288