Significant Transactions (Tables)

12 Months Ended

Mar. 31, 2015

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of Pro Forma Financial Information

The following unaudited pro forma consolidated results of operations assume that the SoftBank Merger and Clearwire Acquisition were completed as of January 1, 2012.

	Years Ended December 31,
	2013			2012
	(in millions)
Net operating revenues	$	35,953		$	35,918
Net loss	$	(4,290	)	$	(5,141	)
Basic loss per common share	$	(1.12	)	$	(1.35	)

Clearwire Acquisition [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the purchase price allocation of consideration in the Clearwire Acquisition:

Purchase Price Allocation (in millions):
Current assets	$	778
Property, plant and equipment	1,245
Identifiable intangibles	12,870
Goodwill	437
Other assets	25
Current liabilities	(1,070		)
Long-term debt	(4,288		)
Deferred tax liabilities	(2,130		)
Other liabilities	(876		)
Net assets acquired	$	6,991

SoftBank Merger [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the purchase price allocation of consideration transferred:

Purchase Price Allocation (in millions):
Current assets	$	8,576
Investments	133
Property, plant and equipment	14,558
Identifiable intangibles	50,672
Goodwill	6,343
Other assets	244
Current liabilities	(10,623		)
Long-term debt	(29,481		)
Deferred tax liabilities	(14,256		)
Other liabilities	(3,989		)
Net assets acquired, prior to conversion of the Bond	22,177
Conversion of Bond	3,100
Net assets acquired, after conversion of the Bond	$	25,277