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Revenue Recognition Net Unfavorable Operating Income Adjustments

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.

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Cumulative provision for contract losses not offset against related costs accumulated on the balance sheet.

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The cumulative amount of the reporting entity's undistributed earnings or deficit.

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Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Oct. 01, 2018	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease to retained earnings upon adoption of new accounting guidance	$ (1,067,851)		$ (1,067,851)			$ (944,965)
Decrease to contract assets due to adoption of new accounting guidance	(145,672)		(145,672)			(142,882)
Decrease to contract liabilities due to adoption of new accounting guidance	(147,549)		(147,549)			(143,270)
Increase to deferred tax assets due to adoption of new accounting guidance	30,572		30,572			8,607
Contract liability revenue recognized during the period			83,700
Liabilities for anticipated losses	11,900		11,900			$ 13,600
Estimated cost to complete the related contracts	15,400		15,400
Impact of the Adoption of ASC 606 \| Accounting Standards Update 2014-09
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease to retained earnings upon adoption of new accounting guidance					$ 2,800
Decrease to contract assets due to adoption of new accounting guidance					5,000
Decrease to contract liabilities due to adoption of new accounting guidance					1,100
Increase to deferred tax assets due to adoption of new accounting guidance					$ 1,100
CIG
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net unfavorable operating income adjustments	$ 8,200	$ 1,000	$ 5,000	$ 2,400