Intangible Assets

9 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets consisted of the following:

	As of December 31, 2019
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Software	$	4,217	$	2,622	$	1,595
Customer related intangible assets	5,941		1,607		4,334
Other intangible assets	244		33		211
Total intangible assets	$	10,402	$	4,262	$	6,140

	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:

	Three Months Ended				Nine Months Ended
(in millions)	December 31, 2019		December 31, 2018		December 31, 2019		December 31, 2018
Intangible asset amortization	$	272	$	225	$	747	$	665
Transition and transformation contract cost amortization(1)	71		59		197		188
Total amortization expense	$	343	$	284	$	944	$	853

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

Estimated future amortization related to intangible assets as of December 31, 2019 is as follows:

Fiscal Year	(in millions)
Remainder of 2020	$	404
2021	$	1,021
2022	$	940
2023	$	862
2024	$	779