Revenue

Disaggregated Revenue

We disaggregate our revenue from contracts with customers by contract-type, whether the Company performs on the contract as the prime contractor or subcontractor, and customer-type for each of our segments, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors.

Revenue by contract type was as follows:



	Fiscal Year Ended March 31, 2019
(in millions)	Defense and Intelligence		Civilian and Health Care		Total
Cost-reimbursable	$	830	$	90	$	920
Fixed-price	1,365		916		2,281
Time-and-materials	392		437		829
Total	$	2,587	$	1,443	$	4,030

Revenue by prime or subcontractor was as follows:



	Fiscal Year Ended March 31, 2019
(in millions)	Defense and Intelligence		Civilian and Health Care		Total
Prime contractor	$	2,431	$	1,343	$	3,774
Subcontractor	156		100		256
Total	$	2,587	$	1,443	$	4,030

Revenue by customer type was as follows:



	Fiscal Year Ended March 31, 2019
(in millions)	Defense and Intelligence		Civilian and Health Care		Total
U.S. federal government, including independent agencies	$	2,574	$	1,185	$	3,759
Non-federal (state, local and other)	13		258		271
Total	$	2,587	$	1,443	$	4,030

Performance Obligations

As of March 31, 2019, approximately $3.6 billion of revenue is expected to be recognized from remaining unsatisfied performance obligations on executed contracts. The Company expects to recognize approximately 67% of these remaining performance obligations as revenue within one year and approximately 79% within two years, with the remainder recognized thereafter.

Contract Balances

Contract assets and contract liabilities consisted of the following:



(in millions)	Balance Sheets Line Item	March 31, 2019		April 1, 2018
Contract assets:
Unbilled receivables	Receivables, net	$	301	$	193
Contract liabilities:
Current portion of deferred revenue and advance contract payments	Deferred revenue and advance contract payments	$	33	$	27
Non-current portion of deferred revenue and advance contract payments	Other long-term liabilities	12		7

Contract assets increased $108 million during the fiscal year ended March 31, 2019, primarily due to the Mergers. Contract assets are net of $31 million of advance contract payments as of March 31, 2019. There were no significant impairment losses related to the Company’s contract assets during the fiscal year ended March 31, 2019.

Contract liabilities increased $11 million during the fiscal year ended March 31, 2019, primarily due to the Mergers. During the fiscal year ended March 31, 2019, the Company recognized $25 million of the deferred revenue and advance contract payments at April 1, 2018 as revenue.