Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Change in Accounting Estimate

The following table presents the effect of aggregate net EAC adjustments:

	Year Ended December 31
$ in millions, except per share data	2022		2021		2020
Revenue	$	447	$	568	$	504
Operating income	360		527		466
Net earnings(1)	284		416		368
Diluted earnings per share(1)	1.83		2.59		2.20

(1)Based on a 21% federal statutory tax rate.

Contract with Customer, Asset and Liability

Net contract assets are as follows:

$ in millions	December 31, 2022		December 31, 2021		$ Change		% Change
Unbilled receivables, net	$	5,983	$	5,492	$	491	9	%
Advance payments and amounts in excess of costs incurred	(3,609)		(3,026)		(583)		19	%
Net contract assets	$	2,374	$	2,466	$	(92)	(4)	%

Property, Plant and Equipment

Major classes of property, plant and equipment and their useful lives are as follows:

		December 31
Useful life in years, $ in millions	Useful Life	2022		2021
Land and land improvements	Up to 40(1)	$	741	$	636
Buildings and improvements	Up to 45	3,272		3,019
Machinery and other equipment	Up to 20	8,774		8,064
Capitalized software costs	3-5	524		481
Leasehold improvements	Lease Term(2)	2,747		2,513
Property, plant and equipment, at cost		16,058		14,713
Accumulated depreciation		(7,258)		(6,819)
Property, plant and equipment, net		$	8,800	$	7,894

(1)Land is not a depreciable asset.

(2)Leasehold improvements are depreciated over the shorter of the useful life of the asset or lease term.

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss, net of tax, are as follows:

	December 31
$ in millions	2022		2021
Unamortized prior service credit	$	1	$	2
Cumulative translation adjustment and other, net	(154)		(145)
Total accumulated other comprehensive loss	$	(153)	$	(143)