Goodwill

12 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

Goodwill

The changes in the carrying amount of goodwill, by segment were as follows:

(in millions)	Defense and Intelligence		Civilian and Health Care		Total
Balance as of March 31, 2017	$	—	$	—	$	—
Additions	977		1,045		2,022
Balance as of March 31, 2018	977		1,045		2,022
Additions	1,074		83		1,157
Balance as of March 31, 2019	$	2,051	$	1,128	$	3,179

The additions to goodwill were due to the Mergers described in Note 2 – “Acquisitions,” and allocations from the Parent.