Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2020

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 to 7 years
Program assets	4 to 14 years
Outsourcing contract costs	Contract life, excluding option years

Intangible assets were as follows:

	March 31, 2020							March 31, 2019
(in millions)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Program assets	$	1,458	$	(367	)	$	1,091	$	1,525	$	(194	)	$	1,331
Software	73		(62		)	11		87		(58		)	29
Developed technology	123		(48		)	75		105		(22		)	83
Backlog	28		(26		)	2		22		(18		)	4
Outsourcing contract costs	26		(12		)	14		25		(7		)	18
Favorable leases	—		—			—		1		—			1
Total intangible assets	$	1,708	$	(515	)	$	1,193	$	1,765	$	(299	)	$	1,466

Estimated Future Amortization of Intangible Assets

Estimated future amortization related to intangible assets as of March 31, 2020 was as follows:

Fiscal Year	(in millions)
2021	$	230
2022	151
2023	137
2024	123
2025	104
Thereafter	448
Total future amortization	$	1,193