Guarantor Financial Information (Tables)

6 Months Ended

Sep. 30, 2015

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Condensed Balance Sheet [Table Text Block]

CONDENSED CONSOLIDATING BALANCE SHEET

	As of September 30, 2015
	Parent/Issuer		Subsidiary Guarantor		Non-Guarantor Subsidiaries		Eliminations			Consolidated
	(in millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	1,513	$	459	$	—		$	1,972
Short-term investments	—		103		—		—			103
Accounts and notes receivable, net	87		67		1,980		(154		)	1,980
Device and accessory inventory	—		—		889		—			889
Deferred tax assets	—		—		63		—			63
Prepaid expenses and other current assets	—		14		2,075		—			2,089
Total current assets	87		1,697		5,466		(154		)	7,096
Investments in subsidiaries	21,159		22,442		—		(43,601		)	—
Property, plant and equipment, net	—		—		21,061		—			21,061
Due from consolidated affiliate	50		22,226		—		(22,276		)	—
Note receivable from consolidated affiliate	10,500		459		—		(10,959		)	—
Intangible assets
Goodwill	—		—		6,575		—			6,575
FCC licenses and other	—		—		40,025		—			40,025
Definite-lived intangible assets, net	—		—		5,155		—			5,155
Other assets	132		1,255		703		(1,151		)	939
Total assets	$	31,928	$	48,079	$	78,985	$	(78,141	)	$	80,851
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	—	$	—	$	3,527	$	—		$	3,527
Accrued expenses and other current liabilities	139		523		3,825		(154		)	4,333
Current portion of long-term debt, financing and capital lease obligations	—		500		895		—			1,395
Total current liabilities	139		1,023		8,247		(154		)	9,255
Long-term debt, financing and capital lease obligations	10,500		14,446		8,643		(1,019		)	32,570
Deferred tax liabilities	—		—		13,929		—			13,929
Note payable due to consolidated affiliate	—		10,500		459		(10,959		)	—
Other liabilities	—		951		2,989		—			3,940
Due to consolidated affiliate	132		—		22,276		(22,408		)	—
Total liabilities	10,771		26,920		56,543		(34,540		)	59,694
Commitments and contingencies
Total stockholders' equity	21,157		21,159		22,442		(43,601		)	21,157
Total liabilities and stockholders' equity	$	31,928	$	48,079	$	78,985	$	(78,141	)	$	80,851

CONDENSED CONSOLIDATING BALANCE SHEET

	As of March 31, 2015
	Parent/Issuer		Subsidiary Guarantor		Non-Guarantor Subsidiaries		Eliminations			Consolidated
	(in millions)
ASSETS
Current assets:
Cash and cash equivalents	$	—	$	3,492	$	518	$	—		$	4,010
Short-term investments	—		146		20		—			166
Accounts and notes receivable, net	84		157		2,160		(111		)	2,290
Device and accessory inventory	—		—		1,359		—			1,359
Deferred tax assets	—		—		62		—			62
Prepaid expenses and other current assets	—		13		1,877		—			1,890
Total current assets	84		3,808		5,996		(111		)	9,777
Investments in subsidiaries	21,712		22,413		—		(44,125		)	—
Property, plant and equipment, net	—		—		19,721		—			19,721
Due from consolidated affiliate	68		20,934		—		(21,002		)	—
Note receivable from consolidated affiliate	10,500		458		—		(10,958		)	—
Intangible assets
Goodwill	—		—		6,575		—			6,575
FCC licenses and other	—		—		39,987		—			39,987
Definite-lived intangible assets, net	—		—		5,893		—			5,893
Other assets	139		1,260		836		(1,158		)	1,077
Total assets	$	32,503	$	48,873	$	79,008	$	(77,354	)	$	83,030
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	—	$	—	$	4,347	$	—		$	4,347
Accrued expenses and other current liabilities	154		625		4,625		(111		)	5,293
Current portion of long-term debt, financing and capital lease obligations	—		500		800		—			1,300
Total current liabilities	154		1,125		9,772		(111		)	10,940
Long-term debt, financing and capital lease obligations	10,500		14,576		8,474		(1,019		)	32,531
Deferred tax liabilities	—		—		13,898		—			13,898
Note payable due to consolidated affiliate	—		10,500		458		(10,958		)	—
Other liabilities	—		960		2,991		—			3,951
Due to consolidated affiliate	139		—		21,002		(21,141		)	—
Total liabilities	10,793		27,161		56,595		(33,229		)	61,320
Commitments and contingencies
Total stockholders' equity	21,710		21,712		22,413		(44,125		)	21,710
Total liabilities and stockholders' equity	$	32,503	$	48,873	$	79,008	$	(77,354	)	$	83,030

Condensed Income Statement [Table Text Block]

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME

	For the Three Months Ended September 30, 2015
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues	$	—		$	—		$	7,975		$	—		$	7,975
Net operating expenses:
Cost of services (exclusive of depreciation and amortization included below)	—			—			2,453			—			2,453
Cost of products (exclusive of depreciation and amortization included below)	—			—			1,290			—			1,290
Selling, general and administrative	—			—			2,224			—			2,224
Impairments	—			—			85			—			85
Severance and exit costs	—			—			25			—			25
Depreciation	—			—			1,412			—			1,412
Amortization	—			—			331			—			331
Other, net	—			—			157			—			157
	—			—			7,977			—			7,977
Operating loss	—			—			(2		)	—			(2		)
Other income (expense):
Interest income	197			40			—			(236		)	1
Interest expense	(197		)	(407		)	(174		)	236			(542		)
(Losses) earnings of subsidiaries	(585		)	(218		)	—			803			—
Other income, net	—			—			4			—			4
	(585		)	(585		)	(170		)	803			(537		)
(Loss) income before income taxes	(585		)	(585		)	(172		)	803			(539		)
Income tax expense	—			—			(46		)	—			(46		)
Net (loss) income	(585		)	(585		)	(218		)	803			(585		)
Other comprehensive (loss) income	(8		)	(8		)	(6		)	14			(8		)
Comprehensive (loss) income	$	(593	)	$	(593	)	$	(224	)	$	817		$	(593	)

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME

	For the Three Months Ended September 30, 2014
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues	$	—		$	—		$	8,488		$	—		$	8,488
Net operating expenses:
Cost of services (exclusive of depreciation and amortization included below)	—			—			2,429			—			2,429
Cost of products (exclusive of depreciation and amortization included below)	—			—			2,372			—			2,372
Selling, general and administrative	—			—			2,301			—			2,301
Severance and exit costs	—			—			284			—			284
Depreciation	—			—			898			—			898
Amortization	—			—			396			—			396
	—			—			8,680			—			8,680
Operating loss	—			—			(192		)	—			(192		)
Other income (expense):
Interest income	169			23			1			(189		)	4
Interest expense	(169		)	(364		)	(166		)	189			(510		)
(Losses) earnings of subsidiaries	(765		)	(424		)	—			1,189			—
Other income, net	—			—			4			—			4
	(765		)	(765		)	(161		)	1,189			(502		)
(Loss) income before income taxes	(765		)	(765		)	(353		)	1,189			(694		)
Income tax expense	—			—			(71		)	—			(71		)
Net (loss) income	(765		)	(765		)	(424		)	1,189			(765		)
Other comprehensive (loss) income	(7		)	(7		)	(1		)	8			(7		)
Comprehensive (loss) income	$	(772	)	$	(772	)	$	(425	)	$	1,197		$	(772	)

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME

	For the Six Months Ended September 30, 2015
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues	$	—		$	—		$	16,002		$	—		$	16,002
Net operating expenses:
Cost of services (exclusive of depreciation and amortization included below)	—			—			4,846			—			4,846
Cost of products (exclusive of depreciation and amortization included below)	—			—			2,655			—			2,655
Selling, general and administrative	—			—			4,411			—			4,411
Impairments	—			—			85			—			85
Severance and exit costs	—			—			38			—			38
Depreciation	—			—			2,653			—			2,653
Amortization	—			—			678			—			678
Other, net	—			—			137			—			137
	—			—			15,503			—			15,503
Operating income	—			—			499			—			499
Other income (expense):
Interest income	395			79			1			(471		)	4
Interest expense	(395		)	(814		)	(346		)	471			(1,084		)
(Losses) earnings of subsidiaries	(605		)	130			—			475			—
Other income, net	—			—			5			—			5
	(605		)	(605		)	(340		)	475			(1,075		)
(Loss) income before income taxes	(605		)	(605		)	159			475			(576		)
Income tax expense	—			—			(29		)	—			(29		)
Net (loss) income	(605		)	(605		)	130			475			(605		)
Other comprehensive (loss) income	(4		)	(4		)	(2		)	6			(4		)
Comprehensive (loss) income	$	(609	)	$	(609	)	$	128		$	481		$	(609	)

CONDENSED CONSOLIDATING STATEMENT OF COMPREHENSIVE (LOSS) INCOME

	For the Six Months Ended September 30, 2014
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Net operating revenues	$	—		$	—		$	17,277		$	—		$	17,277
Net operating expenses:
Cost of services (exclusive of depreciation and amortization included below)	—			—			4,949			—			4,949
Cost of products (exclusive of depreciation and amortization included below)	—			—			4,530			—			4,530
Selling, general and administrative	—			—			4,585			—			4,585
Severance and exit costs	—			—			311			—			311
Depreciation	—			—			1,766			—			1,766
Amortization	—			—			809			—			809
	—			—			16,950			—			16,950
Operating income	—			—			327			—			327
Other income (expense):
Interest income	338			46			1			(378		)	7
Interest expense	(338		)	(732		)	(330		)	378			(1,022		)
(Losses) earnings of subsidiaries	(742		)	(56		)	—			798			—
Other income, net	—			—			2			—			2
	(742		)	(742		)	(327		)	798			(1,013		)
(Loss) income before income taxes	(742		)	(742		)	—			798			(686		)
Income tax expense	—			—			(56		)	—			(56		)
Net (loss) income	(742		)	(742		)	(56		)	798			(742		)
Other comprehensive (loss) income	(7		)	(7		)	(1		)	8			(7		)
Comprehensive (loss) income	$	(749	)	$	(749	)	$	(57	)	$	806		$	(749	)

Condensed Cash Flow Statement [Table Text Block]

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

	For the Six Months Ended September 30, 2015
	Parent/Issuer			Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Cash flows from operating activities:
Net cash (used in) provided by operating activities	$	—		$	(759	)	$	2,670		$	(114	)	$	1,797
Cash flows from investing activities:
Capital expenditures - network and other	—			—			(2,964		)	—			(2,964		)
Capital expenditures - leased devices	—			—			(1,117		)	—			(1,117		)
Expenditures relating to FCC licenses	—			—			(45		)	—			(45		)
Proceeds from sales and maturities of short-term investments	—			219			60			—			279
Purchases of short-term investments	—			(176		)	(40		)	—			(216		)
Change in amounts due from/due to consolidated affiliates	1			(1,270		)	—			1,269			—
Proceeds from sales of assets and FCC licenses	—			—			4			—			4
Intercompany note advance to consolidated affiliate	—			(55		)	—			55			—
Proceeds from intercompany note advance to consolidated affiliate	—			54			—			(54		)	—
Other, net	—			—			(21		)	—			(21		)
Net cash provided by (used in) investing activities	1			(1,228		)	(4,123		)	1,270			(4,080		)
Cash flows from financing activities:
Proceeds from debt and financings	—			—			434			—			434
Repayments of debt, financing and capital lease obligations	—			—			(206		)	—			(206		)
Proceeds from issuance of common stock, net	—			8			—			—			8
Intercompany dividends paid to parent	—			—			(114		)	114			—
Change in amounts due from/due to consolidated affiliates	—			—			1,269			(1,269		)	—
Intercompany note advance from parent	—			—			55			(55		)	—
Repayments of intercompany note advance from parent	—			—			(54		)	54			—
Other, net	(1		)	—			10			—			9
Net cash (used in) provided by financing activities	(1		)	8			1,394			(1,156		)	245
Net decrease in cash and cash equivalents	—			(1,979		)	(59		)	—			(2,038		)
Cash and cash equivalents, beginning of period	—			3,492			518			—			4,010
Cash and cash equivalents, end of period	$	—		$	1,513		$	459		$	—		$	1,972

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS

	For the Six Months Ended September 30, 2014
	Parent/Issuer		Subsidiary Guarantor			Non-Guarantor Subsidiaries			Eliminations			Consolidated
	(in millions)
Cash flows from operating activities:
Net cash (used in) provided by operating activities	$	—	$	(679	)	$	2,586		$	(200	)	$	1,707
Cash flows from investing activities:
Capital expenditures - network and other	—		—			(2,389		)	—			(2,389		)
Expenditures relating to FCC licenses	—		—			(79		)	—			(79		)
Reimbursements relating to FCC licenses	—		—			95			—			95
Proceeds from sales and maturities of short-term investments	—		1,842			—			—			1,842
Purchases of short-term investments	—		(1,754		)	(35		)	—			(1,789		)
Change in amounts due from/due to consolidated affiliates	—		(92		)	—			92			—
Proceeds from sales of assets and FCC licenses	—		—			101			—			101
Other, net	—		—			(6		)	—			(6		)
Net cash (used in) provided by investing activities	—		(4		)	(2,313		)	92			(2,225		)
Cash flows from financing activities:
Repayments of debt, financing and capital lease obligations	—		—			(363		)	—			(363		)
Proceeds from issuance of common stock, net	—		46			—			—			46
Intercompany dividends paid to parent	—		—			(200		)	200			—
Change in amounts due from/due to consolidated affiliates	—		—			92			(92		)	—
Net cash provided by (used in) financing activities	—		46			(471		)	108			(317		)
Net decrease in cash and cash equivalents	—		(637		)	(198		)	—			(835		)
Cash and cash equivalents, beginning of period	—		4,125			845			—			4,970
Cash and cash equivalents, end of period	$	—	$	3,488		$	647		$	—		$	4,135