Intangible Assets

12 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets consisted of the following:

	As of March 31, 2020
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	4,048	$	2,614	$	1,434
Customer related intangible assets	5,795		1,697		4,098
Other intangible assets	235		36		199
Total intangible assets	$	10,078	$	4,347	$	5,731

	As of March 31, 2019
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	3,864	$	2,235	$	1,629
Customer related intangible assets	5,389		1,139		4,250
Other intangible assets	85		25		60
Total intangible assets	$	9,338	$	3,399	$	5,939

The components of amortization expense were as follows:

	Fiscal Years Ended
(in millions)	March 31, 2020		March 31, 2019		March 31, 2018
Intangible asset amortization	$	1,019	$	890	$	860
Transition and transformation contract cost amortization(1)	280		258		226
Total amortization expense	$	1,299	$	1,148	$	1,086

⁽¹⁾  Transition and transformation contract costs are included within other assets on the balance sheet.

Estimated future amortization as of March 31, 2020 is as follows:

Fiscal Year	(in millions)
2021	$	1,004
2022	$	915
2023	$	835
2024	$	750
2025	$	662