Property, Plant and Equipment (Tables)

9 Months Ended

Dec. 31, 2016

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, 2016			March 31, 2016
	(in millions)
Land	$	260		$	260
Network equipment, site costs and related software	21,696			21,500
Buildings and improvements	808			798
Non-network internal use software, office equipment, leased devices and other	8,450			6,182
Construction in progress	1,460			1,249
Less: accumulated depreciation	(13,341		)	(9,692		)
Property, plant and equipment, net	$	19,333		$	20,297

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, 2016			March 31, 2016
	(in millions)
Leased devices	$	7,099		$	4,913
Less: accumulated depreciation	(2,645		)	(1,267		)
Leased devices, net	$	4,454		$	3,646