Intangible Assets

6 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets, including preliminary fair values of those recorded in the Mergers, consisted of the following:



	As of September 30, 2018
(in millions)	Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Program assets	$	1,400	$	117	$	1,283
Software	80		44		36
Developed technology	105		8		97
Backlog	16		5		11
Outsourcing contract costs	20		7		13
Favorable leases	1		—		1
Total intangible assets	$	1,622	$	181	$	1,441



	As of 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

Total intangible assets amortization was $44 million and $83 million for the three and six months ended September 30, 2018, respectively, compared to $16 million and $36 million, respectively, for the three and six months ended September 30, 2017.

The increase in net and gross carrying value for the six months ended September 30, 2018, were primarily due to the Mergers. See Note 4 – “Acquisitions.”

Estimated future amortization related to intangible assets as of September 30, 2018 is as follows:



Fiscal Year	(in millions)
Remainder of fiscal year 2019	$	95
2020	177
2021	161
2022	143
2023	131
Thereafter	734
Total	$	1,441