Guarantor Financial Information (Tables)

12 Months Ended

Mar. 31, 2018

Condensed Financial Information [Abstract]

Condensed Consolidating Balance Sheet

CONDENSED CONSOLIDATING BALANCE SHEET

	As of March 31, 2018
	Parent/Issuer		Subsidiary Guarantor		Non-Guarantor Subsidiaries		Eliminations			Consolidated
	(in millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	6,222	$	388	$	—		$	6,610
Short-term investments	—		2,354		—		—			2,354
Accounts and notes receivable, net	99		248		3,711		(347		)	3,711
Current portion of notes receivable from consolidated affiliates	—		424		—		(424		)	—
Device and accessory inventory	—		—		1,003		—			1,003
Prepaid expenses and other current assets	5		9		561		—			575
Total current assets	104		9,257		5,663		(771		)	14,253
Investments in subsidiaries	26,351		18,785		—		(45,136		)	—
Property, plant and equipment, net	—		—		19,925		—			19,925
Due from consolidated affiliates	1		—		594		(595		)	—
Note receivable from consolidated affiliates	11,887		23,991		—		(35,878		)	—
Intangible assets
Goodwill	—		—		6,586		—			6,586
FCC licenses and other	—		—		41,309		—			41,309
Definite-lived intangible assets, net	—		—		2,465		—			2,465
Other assets	—		185		736		—			921
Total assets	$	38,343	$	52,218	$	77,278	$	(82,380	)	$	85,459
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	—	$	—	$	3,409	$	—		$	3,409
Accrued expenses and other current liabilities	100		341		3,868		(347		)	3,962
Current portion of long-term debt, financing and capital lease obligations	—		1,832		1,597		—			3,429
Current portion of notes payable to consolidated affiliates	—		—		424		(424		)	—
Total current liabilities	100		2,173		9,298		(771		)	10,800
Long-term debt, financing and capital lease obligations	11,887		10,381		15,195		—			37,463
Notes payable due to consolidated affiliates	—		11,887		23,991		(35,878		)	—
Deferred tax liabilities	—		—		7,294		—			7,294
Other liabilities	—		831		2,652		—			3,483
Due to consolidated affiliates	—		595		—		(595		)	—
Total liabilities	11,987		25,867		58,430		(37,244		)	59,040
Commitments and contingencies
Total stockholders' equity	26,356		26,351		18,785		(45,136		)	26,356
Noncontrolling interests	—		—		63		—			63
Total equity	26,356		26,351		18,848		(45,136		)	26,419
Total liabilities and equity	$	38,343	$	52,218	$	77,278	$	(82,380	)	$	85,459

CONDENSED CONSOLIDATING BALANCE SHEET

	As of March 31, 2017
	Parent/Issuer		Subsidiary Guarantor		Non-Guarantor Subsidiaries		Eliminations			Consolidated
	(in millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	2,461	$	409	$	—		$	2,870
Short-term investments	—		5,444		—		—			5,444
Accounts and notes receivable, net	86		1		4,137		(86		)	4,138
Device and accessory inventory	—		—		1,064		—			1,064
Prepaid expenses and other current assets	—		11		590		—			601
Total current assets	86		7,917		6,200		(86		)	14,117
Investments in subsidiaries	18,800		23,854		—		(42,654		)	—
Property, plant and equipment, net	—		—		19,209		—			19,209
Due from consolidated affiliates	25		13,032		—		(13,057		)	—
Note receivable from consolidated affiliates	10,394		575		—		(10,969		)	—
Intangible assets
Goodwill	—		—		6,579		—			6,579
FCC licenses and other	—		—		40,585		—			40,585
Definite-lived intangible assets, net	—		—		3,320		—			3,320
Other assets	—		134		1,179		—			1,313
Total assets	$	29,305	$	45,512	$	77,072	$	(66,766	)	$	85,123
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	—	$	—	$	3,281	$	—		$	3,281
Accrued expenses and other current liabilities	103		478		3,646		(86		)	4,141
Current portion of long-term debt, financing and capital lease obligations	—		1,356		3,680		—			5,036
Total current liabilities	103		1,834		10,607		(86		)	12,458
Long-term debt, financing and capital lease obligations	10,394		13,647		11,837		—			35,878
Note payable due to consolidated affiliates	—		10,394		575		(10,969		)	—
Deferred tax liabilities	—		—		14,416		—			14,416
Other liabilities	—		837		2,726		—			3,563
Due to consolidated affiliates	—		—		13,057		(13,057		)	—
Total liabilities	10,497		26,712		53,218		(24,112		)	66,315
Commitments and contingencies
Total stockholders' equity	18,808		18,800		23,854		(42,654		)	18,808
Total liabilities and stockholders' equity	$	29,305	$	45,512	$	77,072	$	(66,766	)	$	85,123

Condensed Consolidating Income Statement

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)

	Year Ended March 31, 2017
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues:
Service revenue	$	—		$	—		$	25,368		$	—		$	25,368
Equipment sales	—			—			4,684			—			4,684
Equipment rentals	—			—			3,295			—			3,295
	—			—			33,347			—			33,347
Net operating expenses:
Cost of services (exclusive of depreciation and amortization below)	—			—			7,861			—			7,861
Cost of equipment sales	—			—			6,583			—			6,583
Cost of equipment rentals (exclusive of depreciation below)	—			—			975			—			975
Selling, general and administrative	—			—			7,994			—			7,994
Severance and exit costs	—			—			66			—			66
Depreciation - network and other	—			—			3,982			—			3,982
Depreciation - equipment rentals	—			—			3,116			—			3,116
Amortization	—			—			1,052			—			1,052
Other, net	—			—			(46		)	—			(46		)
	—			—			31,583			—			31,583
Operating income	—			—			1,764			—			1,764
Other (expense) income:
Interest income	790			145			21			(896		)	60
Interest expense	(790		)	(1,675		)	(926		)	896			(2,495		)
(Losses) earnings of subsidiaries	(1,206		)	402			—			804			—
Other expense, net	—			(78		)	(22		)	—			(100		)
	(1,206		)	(1,206		)	(927		)	804			(2,535		)
(Loss) income before income taxes	(1,206		)	(1,206		)	837			804			(771		)
Income tax expense	—			—			(435		)	—			(435		)
Net (loss) income	(1,206		)	(1,206		)	402			804			(1,206		)
Other comprehensive income (loss)	35			35			42			(77		)	35
Comprehensive (loss) income	$	(1,171	)	$	(1,171	)	$	444		$	727		$	(1,171	)

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE INCOME (LOSS)

	Year Ended March 31, 2016
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues:
Service revenue	$	—		$	—		$	27,174		$	—		$	27,174
Equipment sales	—			—			3,168			—			3,168
Equipment rentals	—			—			1,838			—			1,838
	—			—			32,180			—			32,180
Net operating expenses:
Cost of services (exclusive of depreciation and amortization below)	—			—			9,439			—			9,439
Cost of equipment sales	—			—			5,518			—			5,518
Cost of equipment rentals (exclusive of depreciation below)	—			—			598			—			598
Selling, general and administrative	—			—			8,479			—			8,479
Severance and exit costs	—			—			409			—			409
Depreciation - network and other	—			—			4,013			—			4,013
Depreciation - equipment rentals	—			—			1,781			—			1,781
Amortization	—			—			1,294			—			1,294
Other, net	—			—			339			—			339
	—			—			31,870			—			31,870
Operating income	—			—			310			—			310
Other (expense) income:
Interest income	790			165			5			(949		)	11
Interest expense	(790		)	(1,624		)	(717		)	949			(2,182		)
(Losses) earnings of subsidiaries	(1,997		)	(538		)	—			2,535			—
Other income, net	—			—			7			—			7
	(1,997		)	(1,997		)	(705		)	2,535			(2,164		)
(Loss) income before income taxes	(1,997		)	(1,997		)	(395		)	2,535			(1,854		)
Income tax benefit (expense)	2			—			(143		)	—			(141		)
Net (loss) income	(1,995		)	(1,997		)	(538		)	2,535			(1,995		)
Other comprehensive (loss) income	(31		)	(31		)	(21		)	52			(31		)
Comprehensive (loss) income	$	(2,026	)	$	(2,028	)	$	(559	)	$	2,587		$	(2,026	)

Condensed Consolidating Cash Flow Statement

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

	Year Ended March 31, 2017
	Parent/Issuer		Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Cash flows from operating activities:
Net cash used in operating activities	$	—	$	(1,640	)	$	(1,451	)	$	(199	)	$	(3,290	)
Cash flows from investing activities:
Capital expenditures - network and other	—		—			(1,950		)	—			(1,950		)
Capital expenditures - leased devices	—		—			(4,976		)	—			(4,976		)
Expenditures relating to FCC licenses	—		—			(83		)	—			(83		)
Proceeds from sales and maturities of short-term investments	—		4,566			55			—			4,621
Purchases of short-term investments	—		(10,010		)	(55		)	—			(10,065		)
Change in amounts due from/due to consolidated affiliates	—		7,097			—			(7,097		)	—
Proceeds from sales of assets and FCC licenses	—		—			219			—			219
Proceeds from deferred purchase price from sale of receivables	—		—			10,498			—			10,498
Intercompany note advance to consolidated affiliate	—		(414		)	—			414			—
Proceeds from intercompany note advance to consolidated affiliate	—		84			—			(84		)	—
Other, net	—		11			30			—			41
Net cash provided by (used in) investing activities	—		1,334			3,738			(6,767		)	(1,695		)
Cash flows from financing activities:
Proceeds from debt and financings	—		4,000			6,966			—			10,966
Repayments of debt, financing and capital lease obligations	—		(3,250		)	(2,167		)	—			(5,417		)
Debt financing costs	—		(187		)	(171		)	—			(358		)
Intercompany dividends paid to consolidated affiliate	—		—			(199		)	199			—
Change in amounts due from/due to consolidated affiliates	—		—			(7,097		)	7,097			—
Intercompany note advance from parent	—		—			414			(414		)	—
Repayments of intercompany note advance from parent	—		—			(84		)	84			—
Other, net	—		50			45			—			95
Net cash provided by (used in) financing activities	—		613			(2,293		)	6,966			5,286
Net increase (decrease) in cash, cash equivalents and restricted cash	—		307			(6		)	—			301
Cash, cash equivalents and restricted cash, beginning of period	—		2,154			487			—			2,641
Cash, cash equivalents and restricted cash, end of period	$	—	$	2,461		$	481		$	—		$	2,942

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

	Year Ended March 31, 2016
	Parent/Issuer			Subsidiary Guarantor			Non- Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Cash flows from operating activities:
Net cash (used in) provided by operating activities	$	—		$	(1,422	)	$	1,232		$	(233	)	$	(423	)
Cash flows from investing activities:
Capital expenditures - network and other	—			—			(4,680		)	—			(4,680		)
Capital expenditures - leased devices	—			—			(5,898		)	—			(5,898		)
Expenditures relating to FCC licenses	—			—			(98		)	—			(98		)
Proceeds from sales and maturities of short-term investments	—			343			75			—			418
Purchases of short-term investments	—			(197		)	(55		)	—			(252		)
Change in amounts due from/due to consolidated affiliates	1			(36		)	—			35			—
Proceeds from sales of assets and FCC licenses	—			—			62			—			62
Proceeds from deferred purchase price from sale of receivables	—			—			7,925			—			7,925
Proceeds from sale-leaseback transaction	—			—			1,136			—			1,136
Intercompany note advance to consolidated affiliate	—			(159		)	—			159			—
Proceeds from intercompany note advance to consolidated affiliate	—			372			—			(372		)	—
Other, net	—			1			(29		)	—			(28		)
Net cash provided by (used in) investing activities	1			324			(1,562		)	(178		)	(1,415		)
Cash flows from financing activities:
Proceeds from debt and financings	—			250			1,105			—			1,355
Repayments of debt and capital lease obligations	—			(500		)	(399		)	—			(899		)
Debt financing costs	(1		)	—			(10		)	—			(11		)
Intercompany dividends paid to consolidated affiliate	—			—			(233		)	233			—
Change in amounts due from/due to consolidated affiliates	—			—			35			(35		)	—
Intercompany note advance from parent	—			—			159			(159		)	—
Repayments of intercompany note advance from parent	—			—			(372		)	372			—
Other, net	—			10			14			—			24
Net cash (used in) provided by financing activities	(1		)	(240		)	299			411			469
Net decrease in cash, cash equivalents and restricted cash	—			(1,338		)	(31		)	—			(1,369		)
Cash, cash equivalents and restricted cash, beginning of period	—			3,492			518			—			4,010
Cash, cash equivalents and restricted cash, end of period	$	—		$	2,154		$	487		$	—		$	2,641