Revenue Recognition - Schedule of Contract Asset and Liability (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Revenue from Contract with Customer [Abstract]
Contract assets	$ 296.3	$ 310.9
Reserve for overhead rate disallowance	(43.2)	(42.8)
Contract assets, net of reserve	253.1	268.1
Contract liabilities	185.3	276.8
Net contract assets (liabilities), net of reserve	$ 67.8	$ (8.7)

Contract with Customer, Asset (Liability), Net

No definition available.

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- Definition

Amount of accumulated credit loss for right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

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- Definition

Amount, before 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.

+ References

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- Definition

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.

+ References

+ Details

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- References

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