Property, Plant and Equipment (Tables)

9 Months Ended

Dec. 31, 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:

	December 31, 2015			March 31, 2015
	(in millions)
Land	$	266		$	266
Network equipment, site costs and related software	21,304			18,990
Buildings and improvements	793			754
Non-network internal use software, office equipment, leased devices and other	5,346			2,979
Construction in progress	1,395			2,090
Less: accumulated depreciation	(8,459		)	(5,358		)
Property, plant and equipment, net	$	20,645		$	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:

	December 31, 2015			March 31, 2015
	(in millions)
Leased devices	$	4,120		$	1,974
Less: accumulated depreciation	(799		)	(197		)
Leased devices, net	$	3,321		$	1,777