Government Grants (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Deferred Grant Income Liability Net [Abstract]
Deferred Grant Income Liability	$ 127.9	$ 133.5
Grant Income Recognized	6.1	5.4
Exchange Rate Effect On Deferred Grant Income Liability	1.7	(0.2)
Deferred Grant Income Liability	$ 123.5	$ 127.9

Liability associated with eligible amounts of capital spending under the terms of the grants that will be amortized as a component of production cost to offset depreciation of the completed asset. The deferred grant income liability is net of the present value of any future minimum lease payments.

No definition available.

Name:	spr_DeferredGrantIncomeLiability
Namespace Prefix:	spr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant