Government Grants (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Asset Related To Deferred Grant Income Net [Abstract]
Asset Related To Deferred Grant Income Beginning Balance	$ 128.3	$ 133.4
Depreciation	5.1	5.1
Exchange Rate Effect On Asset Related To Deferred Grant Income	1.7
Asset Related To Deferred Grant Income Ending Balance	$ 124.9	$ 128.3

Asset associated with eligible amounts of capital spending under the terms of the grants what will be amortized as a reduction to production cost.

No definition available.

Name:	spr_AssetRelatedToDeferredGrantIncomeBeginningBalance
Namespace Prefix:	spr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant