Commitments and Contingencies (Unaudited) (Tables)

9 Months Ended

Sep. 30, 2023

Environmental Remediation Range of Future Costs [Line Items]

Environmental Remediation [Table Text Block]

The table below summarizes the amount accrued for environmental remediation costs, management’s estimate of the amount of reasonably possible future costs in excess of accrued costs and the deferred costs expected to be recoverable through overhead charges on U.S. government contracts as of September 30, 2023 and December 31, 2022:

$ in millions	Accrued Costs(1)(2)		Reasonably Possible Future Costs in Excess of Accrued Costs(2)		Deferred Costs(3)
September 30, 2023	$	574	$	368	$	511
December 31, 2022	565		353		486

(1) As of September 30, 2023, $217 million is recorded in Other current liabilities and $357 million is recorded in Other non-current liabilities.

(2) Estimated remediation costs are not discounted to present value. The reasonably possible future costs in excess of accrued costs do not take into consideration amounts expected to be recoverable through overhead charges on U.S. government contracts.

(3) As of September 30, 2023, $201 million is deferred in Prepaid expenses and other current assets and $310 million is deferred in Other non-current assets. These amounts are evaluated for recoverability on a routine basis.