Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2016	Apr. 02, 2015	Dec. 31, 2015	Sep. 26, 2013
Related Party Transaction, Due from (to) Related Party [Abstract]
Amount paid for services rendered ($0.1 and less than $0.1 respectively)	$ 4.7	$ 5.9
Amounts owed to supplier and recorded as accrued liabilities	$ 1.4		$ 4.0	$ 0.1

Maximum Expense recognized during the period resulting from transactions with a related party during the period.

No definition available.

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