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Receivables and Contract Assets (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Oct. 02, 2020
Components of receivables and contract assets:
Amounts billed, net	$ 1,384,558	$ 1,294,204
Unbilled receivables and other	1,439,632	1,449,184
Contract assets	441,070	423,922
Total receivables and contract assets, net	3,265,260	3,167,310
Other information about receivables:
Amounts due from the United States federal government, included above, net of advanced billings	$ 637,937	$ 600,207

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- Definition

Other information about receivables.

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Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date.

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Carrying amount of assets as of the balance sheet date pertaining to amounts paid by the insured (including a ceding company) under insurance or reinsurance contracts for which insurance risk is not transferred.

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Amount receivable from related parties classified as other, due within one year or the normal operating cycle, if longer.

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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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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

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