Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Amortizable Intangible Assets

The estimated useful lives for finite-lived intangible assets are shown below:

Intangible Assets	Estimated Useful Lives
Acquired backlog	1 year
Software	2 to 10 years
Developed technology	6 years
Program assets	4 to 14 years
Outsourcing contract costs	Contract life, excluding option years

Intangible assets were as follows:

	March 31, 2019
(in millions)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Program assets	$	1,525	$	(194	)	$	1,331
Software	87		(58		)	29
Developed technology	105		(22		)	83
Backlog	22		(18		)	4
Outsourcing contract costs	25		(7		)	18
Favorable leases	1		—			1
Total intangible assets	$	1,765	$	(299	)	$	1,466

	March 31, 2018
(in millions)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Program assets	$	900	$	(69	)	$	831
Software	75		(28		)	47
Outsourcing contract costs	20		(1		)	19
Total intangible assets	$	995	$	(98	)	$	897

Estimated Future Amortization of Intangible Assets

Estimated future amortization related to intangible assets as of March 31, 2019 was as follows:

Fiscal Year	(in millions)
2020	$	199
2021	181
2022	157
2023	145
2024	134
Thereafter	650
Total future amortization	$	1,466