Receivables (Tables)

6 Months Ended

Mar. 31, 2017

Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table presents the components of receivables appearing in the accompanying Consolidated Balance Sheets at March 31, 2017 and September 30, 2016, as well as certain other related information (in thousands):

	March 31, 2017		September 30, 2016
Components of receivables:
Amounts billed	$	927,500	$	1,110,042
Unbilled receivables and other		1,090,918		937,552
Retentions receivable		39,587		68,069
Total receivables, net	$	2,058,005	$	2,115,663
Other information about receivables:
Amounts due from the United States federal    government, included above, net of advanced    billings	$	212,969	$	235,203
Claims receivable	$	26,169	$	26,061