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Financing Receivables and Operating Lease Equipment - Components of Investment in Sales-Type or Finance Leases (Details) - USD ($) $ in Millions | Jun. 30, 2025 | Dec. 31, 2024
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Receivables [Abstract] |  |
Gross lease payments receivable | $ 26 | $ 229
Unearned income | (17) | (26)
Net lease payments receivable | $ 9 | $ 203

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- Definition Sales-Type And Direct Financing Leases, Net Lease Payment Receivable + References No definition available. + Details
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Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The remaining (unamortized) difference between the gross investment in a sales-type and direct financing lease and the cost or carrying amount of the leased property as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | ba_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Amount of undiscounted cash flows to be received by lessor for sales-type and direct financing leases. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479773/842-30-50-10 + Details
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