Credit Agreement Margin on LIBOR

No definition available.

Name:	spr_CreditAgreementMarginonLIBOR
Namespace Prefix:	spr_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Extinguishment Included In Cash Flow Amortization Expense

+ References

No definition available.

+ Details

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

- Definition

Extinguishment Included In Cash Flow Deferred Financing Fees

+ References

No definition available.

+ Details

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

- Definition

Margin On Base Rate Borrowing Term Loan

+ References

No definition available.

+ Details

Name:	spr_MarginOnBaseRateBorrowingTermLoan
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maturity date of the 2012 Senior Secured Credit Facility Term loan

+ References

No definition available.

+ Details

Name:	spr_MaturityDate2012SeniorSecuredCreditFacilityTerm
Namespace Prefix:	spr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

MaturityDate2022Notes

+ References

No definition available.

+ Details

Name:	spr_MaturityDate2022Notes
Namespace Prefix:	spr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maturity Date for 2020 notes

+ References

No definition available.

+ Details

Name:	spr_MaturityDatefor2020Notes
Namespace Prefix:	spr_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum Adjustment Margin on Base Rate

+ References

No definition available.

+ Details

Name:	spr_MaximumAdjustmentMarginonBaseRate
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum Adjustment Margin on Libor

+ References

No definition available.

+ Details

Name:	spr_MaximumAdjustmentMarginonLibor
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum Adjustment Margin on Base Rate

+ References

No definition available.

+ Details

Name:	spr_MinimumAdjustmentMarginonBaseRate
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum Adjustment Margin on Libor

+ References

No definition available.

+ Details

Name:	spr_MinimumAdjustmentMarginonLibor
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Outstanding balance on term loan

+ References

No definition available.

+ Details

Name:	spr_OutstandingBalanceTermLoan
Namespace Prefix:	spr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Senior Secured Credit Facility Term Libor Floor

+ References

No definition available.

+ Details

Name:	spr_SeniorSecuredCreditFacilityTermLiborFloor
Namespace Prefix:	spr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

+ Details

Name:	us-gaap_GainsLossesOnExtinguishmentOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_SeniorNotes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongtermDebtTypeAxis=spr_SeniorUnsecuredNotesDueTwoThousandAndTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=spr_SeniorUnsecuredNotesDueTwoThousandAndTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=spr_AmendmentThreeTermLoanDueTwentyTwentyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=spr_AmendmentFiveTermLoanDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt (Details Textual) $ in Millions			3 Months Ended
Debt (Details Textual) $ in Millions	Mar. 18, 2014 USD ($)	Nov. 18, 2010 USD ($)	Mar. 31, 2016 USD ($)	Apr. 02, 2015 USD ($)	Mar. 18, 2015 USD ($)
Debt Instrument [Line Items]
Senior Secured Credit Facility Term Libor Floor			0.75%
MinimumAdjustmentMarginOnLibor					1.75%
MaximumAdjustmentMarginOnLibor					2.50%
Minimum Adjustment Margin on Base Rate					0.75%
Maximum Adjustment Margin on Base Rate					1.50%
Senior Unsecured Notes Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 300.0
Debt Instrument, Interest Rate, Stated Percentage		6.75%
MaturityDatefor2020Notes		Dec. 15, 2020
Senior Notes			$ 300.0
Senior unsecured notes due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 300.0
Debt Instrument, Interest Rate, Stated Percentage	5.25%
Senior Notes			$ 299.5
Maturity Date 2022 Notes	Mar. 15, 2022
Amendment Three Term Loan Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 534.9
Maturity Date 2012 Senior Secured Credit Facility Term			Sep. 15, 2020
Amendment Five Term Loan Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 535.0
Maturity Date 2012 Senior Secured Credit Facility Term			Mar. 18, 2020
Credit Agreement Margin on LIBOR					0.0175
Margin On Base Rate Borrowing Term Loan					0.75%
Outstanding Balance Term Loan			$ 501.6
Gains (Losses) on Extinguishment of Debt				$ 3.6
Extinguishment Included In Cash Flow Deferred Financing Fees				3.1
Extinguishment Included In Cash Flow Amortization Expense				$ 0.5
Debt Instrument, Periodic Payment, Principal			$ 6.7