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v3.21.1

Basis of Presentation (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 01, 2020 company | Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Sep. 30, 2020 USD ($)
Concentration Risk [Line Items] |  |  |  |  |  |
Number of independent, publicly-traded companies resulting from proposed separation transaction | company | 2 |  |  |  |  |
Capital expenditures |  | $ 55 | $ 152 |  |  |
Decrease to accounts payable, trade |  | (26) | 132 |  |  |
Tax misstatement recorded to retained earnings |  | $ 443 |  |  | $ 364 |
Revision of Prior Period, Error Correction, Adjustment |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Capital expenditures |  |  | 83 | $ 83 |  |
Decrease to accounts payable, trade |  |  | $ 83 | $ 83 |  |
Tax misstatement recorded to retained earnings |  |  |  |  |  | $ 16
Aerospace | Revenue Benchmark | Customer Concentration Risk |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  | 60.00% | 73.00% |  |  |

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