Document and Entity Information (USD $)	3 Months Ended
	Mar. 28, 2013	Apr. 26, 2013 Class A [Member]	Apr. 26, 2013 Class B
Class Of Stock [Line Items]
Entity Common Stock, Shares Outstanding		119,668,567	24,005,505
Entity Registrant Name	Spirit AeroSystems Holdings, Inc.
Entity Central Index Key	0001364885
Document Type	10-Q
Document Period End Date	Mar. 28, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float	$ 2,825,306,867
Amendment Flag	false
TradingSymbol	SPR