Intangible Assets (Tables)

9 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Amortizable Intangible Assets

	As of December 31, 2018
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	3,695	$	2,070	$	1,625
Transition and transformation contract costs	1,721		941		780
Customer related intangible assets	5,333		1,016		4,317
Other intangible assets	71		23		48
Total intangible assets	$	10,820	$	4,050	$	6,770

	As of March 31, 2018
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	3,484	$	1,918	$	1,566
Transition and transformation contract costs	1,569		766		803
Customer related intangible assets	5,405		666		4,739
Other intangible assets	90		19		71
Total intangible assets	$	10,548	$	3,369	$	7,179

Estimated Future Amortization of Intangible Assets

Estimated future amortization related to intangible assets as of December 31, 2018 is as follows:

Fiscal Year	(in millions)
Remainder of 2019	$	393
2020	$	1,149
2021	$	1,017
2022	$	857
2023	$	762