Severe Weather Event (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Impact From Severe Weather [Line Items]
Impact from severe weather event	$ 88.7
Insurance settlement	234.9
Asset Impairment Severe Weather Event	0.2
Gain On Insurance Settlement Severe Weather Event	$ 146.2

The charge taken on the income statement included in operating income for peoperty damage, clean up and recovery costs related to a tornado. Also includes expenses incurred to make up for production interruption and reduce further disruption.

No definition available.

Name:	spr_SevereWeatherEventCharge
Namespace Prefix:	spr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration