Property, Plant and Equipment (Tables)

3 Months Ended

Jun. 30, 2015

Property, Plant and Equipment [Line Items]

Schedule of Property, Plant and Equipment

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

	June 30, 2015			March 31, 2015
	(in millions)
Land	$	266		$	266
Network equipment, site costs and related software	19,639			18,990
Buildings and improvements	757			754
Non-network internal use software, office equipment, leased devices and other	4,343			2,979
Construction in progress	1,911			2,090
Less: accumulated depreciation	(6,353		)	(5,358		)
Property, plant and equipment, net	$	20,563		$	19,721

Leased devices [Member]

Property, Plant and Equipment [Line Items]

Schedule of Property, Plant and Equipment

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

	June 30, 2015			March 31, 2015
	(in millions)
Leased devices	$	3,279		$	1,974
Less: accumulated depreciation	(450		)	(197		)
Leased devices, net	$	2,829		$	1,777