Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Financial Statement Impacts of Applying New Accounting Standard

Including the impacts from a change in the accounting conclusion on the 1,400 previously failed sale-leaseback tower sites, the cumulative effect of initially applying the new lease standard on January 1, 2019 is as follows:

	January 1, 2019
(in millions)	Beginning Balance			Cumulative Effect Adjustment			Beginning Balance, As Adjusted
Assets
Other current assets	$	1,676		$	(78	)	$	1,598
Property and equipment, net	23,359			(2,339		)	21,020
Operating lease right-of-use assets	—			9,251			9,251
Financing lease right-of-use assets	—			2,271			2,271
Other intangible assets, net	198			(12		)	186
Other assets	1,623			(71		)	1,552
Liabilities and Stockholders’ Equity
Accounts payable and accrued liabilities	7,741			(65		)	7,676
Other current liabilities	787			28			815
Short-term and long-term debt	12,965			(2,015		)	10,950
Tower obligations	2,557			(345		)	2,212
Deferred tax liabilities	4,472			231			4,703
Deferred rent expense	2,781			(2,781		)	—
Short-term and long-term operating lease liabilities	—			11,364			11,364
Short-term and long-term financing lease liabilities	—			2,016			2,016
Other long-term liabilities	967			(64		)	903
Accumulated deficit	$	(12,954	)	$	653		$	(12,301	)