Property, Plant and Equipment (Tables)

6 Months Ended

Sep. 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:

	September 30, 2015			March 31, 2015
	(in millions)
Land	$	266		$	266
Network equipment, site costs and related software	20,443			18,990
Buildings and improvements	766			754
Non-network internal use software, office equipment, leased devices and other	5,597			2,979
Construction in progress	1,583			2,090
Less: accumulated depreciation	(7,594		)	(5,358		)
Property, plant and equipment, net	$	21,061		$	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:

	September 30, 2015			March 31, 2015
	(in millions)
Leased devices	$	4,432		$	1,974
Less: accumulated depreciation	(823		)	(197		)
Leased devices, net	$	3,609		$	1,777