Expiration Date of Collective-Bargaining Agreements

No definition available.

Name:	spr_ExpirationDateofCollectiveBargainingAgreements
Namespace Prefix:	spr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

+ Details

Name:	spr_StatementDefinedContributionPlansLineItems
Namespace Prefix:	spr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

+ Details

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

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Name of defined benefit plan, defined as multiple-employer plan but accounted for as multiemployer plan, in which entity participates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 63
-SubTopic 30
-Topic 715
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481067/715-30-55-63

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 55
-Paragraph 64
-SubTopic 30
-Topic 715
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481067/715-30-55-64

+ Details

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

- Details

Name:	spr_DefinedContributionsAxis=spr_UkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	spr_DefinedContributionsAxis=spr_UKBelfastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Pension and Other Post Retirement Plans (Details 6) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	75.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	8.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	4.00%
Statement Defined Contribution Plans [Line Items]
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date	IAM June 20, 2027, November 13, 2027UAW December 7, 2025
Multiple-Employer Plan Accounted for as Multiemployer Plan, Plan Name	IAM National Pension Fund
U.K. [Member]
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]
Defined Contribution Plan, Cost	$ 4.4	$ 3.9	$ 3.9
U.K. - Belfast [Member]
Retirement Benefits [Abstract]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	8.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	8.00%
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]
Defined Contribution Plan, Cost	$ 0.0	$ 1.2	$ 0.3