Receivables, Net (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Receivables, Net
Trade accounts receivable	$ 1,304	$ 825
Unbilled receivables	727	528
Less: Allowances for doubtful accounts	(9)	(9)
Net trade accounts receivable	2,022	1,344
Other receivables	538	394
Receivables, net	2,560	1,738
Net accounts receivable under long-term contracts, due primarily from agencies of the U.S. government and their prime contractors	278	232
Recognized sales value of performance not yet billable	$ 233	157
Average length of long-term contracts	3 years
Average remaining length of contracts	1 year
Net receivables expected to be collected within one year	$ 264
Maximum available sale of the accounts receivables under factoring program	1,700	1,600
Amount of accounts receivable available for sale under the factoring program	308	232
Factoring program expense included in statement of earnings	$ 41	$ 29	$ 41

Represents the expenses related to factoring program included in selling general and administrative expenses.

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Amount of net accounts receivable that is expected to be collected within the next year.

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Represents the average remaining length of long-term contracts.

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Represents the average length of long-term contracts.

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- Definition

Amount of unbilled receivables under long-term contracts that were not yet billable.

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Represents the maximum amount of sale of receivables under an accounts receivable factoring program.

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The amount of receivables that were available for sale under the factoring program as of the end of the period.

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- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date.

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

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