Intangible Assets

12 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets consisted of the following:

	As of March 31, 2021
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	4,014	$	2,733	$	1,281
Customer related intangible assets	4,212		1,641		2,571
Other intangible assets	239		48		191
Total intangible assets	$	8,465	$	4,422	$	4,043

	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

The components of amortization expense were as follows:

	Fiscal Years Ended
(in millions)	March 31, 2021		March 31, 2020		March 31, 2019
Intangible asset amortization	$	952	$	1,019	$	890
Transition and transformation contract cost amortization(1)	264		280		258
Total amortization expense	$	1,216	$	1,299	$	1,148

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

Estimated future amortization as of March 31, 2021 is as follows:

Fiscal Year	(in millions)
2022	$	837
2023	$	755
2024	$	669
2025	$	554
2026	$	505