Property, Plant and Equipment (Tables)

12 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment

The following table presents the components of property, plant and equipment, and the related accumulated depreciation:

	March 31,
	2015			2014
	(in millions)
Land	$	266		$	265
Network equipment, site costs and related software	18,990			14,902
Buildings and improvements	754			745
Non-network internal use software, office equipment, leased devices and other	2,979			866
Construction in progress	2,090			1,970
Less: accumulated depreciation	(5,358		)	(2,449		)
Property, plant and equipment, net	$	19,721		$	16,299

Minimum Estimated Payments to be Received for Leased Devices

As of March 31, 2015, the minimum estimated payments to be received for leased devices were as follows (in millions):

Fiscal year 2015	$	740
Fiscal year 2016	505
Fiscal year 2017	1
Fiscal year 2018 and thereafter	—
	$	1,246

Leased devices [Member]

Property, Plant and Equipment [Line Items]

Property, Plant and Equipment

The following table presents leased devices and the related accumulated depreciation:

	March 31,
	2015			2014
	(in millions)
Leased devices	$	1,974		$	—
Less: accumulated depreciation	(197		)	—
Leased devices, net	$	1,777		$	—