Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 24, 2020	Jun. 27, 2019
Class of Stock [Line Items]
Title of 12(b) Security	Class A common stock, par value $0.01 per share
Security Exchange Name	NYSE
Entity Incorporation, State or Country Code	DE
Document Transition Report	false
Document Annual Report	true
Entity Common Stock, Shares Outstanding		104,777,766
Entity File Number	001-33160
Entity Tax Identification Number	20-2436320
Entity Address, Address Line One	3801 South Oliver
Entity Address, City or Town	Wichita
Entity Address, State or Province	KS
Entity Address, Postal Zip Code	67210
City Area Code	316
Local Phone Number	526-9000
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Registrant Name	Spirit AeroSystems Holdings, Inc.
Entity Central Index Key	0001364885
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 8,226,337,100
Trading Symbol	SPR