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Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Revenue by business unit and reportable segment was as follows:

									Year Ended December 31,
Dollars in millions															2021						2020						2019
Government Solutions
Science & Space															$	1,018					$	967					$	863
Defense & Intel															1,475						959						782
Readiness & Sustainment															2,644						1,153						1,400
International															1,012						976						997
Total Government Solutions															6,149						4,055						4,042
Sustainable Technology Solutions															1,190						1,712						1,597
Total revenue															$	7,339					$	5,767					$	5,639

Revenue by geographic destination was as follows:

			Year Ended December 31, 2021
Dollars in millions			Government Solutions						Sustainable Technology Solutions																		Total
United States			$	4,493					$	430																	$	4,923
Middle East			393						197																		590
Europe			816						223																		1,039
Australia			351						16																		367
Canada			1						2																		3
Africa			87						92																		179
Asia			7						192																		199
Other countries			1						38																		39
Total revenue			$	6,149					$	1,190																	$	7,339

			Year Ended December 31, 2020
Dollars in millions			Government Solutions						Sustainable Technology Solutions																		Total
United States			$	2,280					$	751																	$	3,031
Middle East			622			(a) (b)			235																		857
Europe			743						218																		961
Australia			272						52																		324
Canada			1						45																		46
Africa			81						71																		152
Asia			—						203																		203
Other countries			56						137																		193
Total revenue			$	4,055					$	1,712																	$	5,767

			Year Ended December 31, 2019
Dollars in millions			Government Solutions						Sustainable Technology Solutions																		Total
United States			$	2,110					$	595																	$	2,705
Middle East			795			(a) (b)			232																		1,027
Europe			796						262																		1,058
Australia			209						79																		288
Canada			1						38																		39
Africa			76						121																		197
Asia			—						214																		214
Other countries			55						56																		111
Total revenue			$	4,042					$	1,597																	$	5,639

Revenue by contract type was as follows:

			Year Ended December 31, 2021
Dollars in millions			Government Solutions						Sustainable Technology Solutions						Total
Cost Reimbursable			$	4,175					$	—					$	4,175
Time-and-Materials			903						739						$	1,642
Fixed Price			1,071						451						$	1,522
Total revenue			$	6,149					$	1,190					$	7,339

			Year Ended December 31, 2020
Dollars in millions			Government Solutions						Sustainable Technology Solutions						Total
Cost Reimbursable			$	2,409					$	—					$	2,409
Time-and-Materials			608						1,215						1,823
Fixed Price			1,038						497						1,535
Total revenue			$	4,055					$	1,712					$	5,767

			Year Ended December 31, 2019
Dollars in millions			Government Solutions						Sustainable Technology Solutions						Total
Cost Reimbursable			$	2,501					$	—					$	2,501
Time-and-Materials			452						1,077						1,529
Fixed Price			1,089						520						1,609
Total revenue			$	4,042					$	1,597					$	5,639

Schedule of Accounts Receivable

			December 31,
Dollars in millions			2021						2020
Unbilled			$	698					$	476
Trade & other			713						423
Accounts receivable, net			$	1,411					$	899

X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

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- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
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