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Worldwide Pandemic - Voluntary Separation Program 2020 and Extended ETO (Details) - USD ($) $ in Millions | 3 Months Ended
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Sep. 30, 2020 | Jun. 30, 2020
Voluntary Separation Program 2020 Accrual for Employees who Accepted through June 30, 2020 |  | $ 307
Voluntary Separation Program 2020 Total Accrued | $ 619 | 307
Extended Emergency Time Off Accrual for Employees who Accepted through June 30, 2020 |  | 0
Extended Emergency Time Off Accrual for Employees who Accepted through September 30, 2020 | 613 |
Extended Emergency Time Off Reduction for Employees who Accepted through September 30, 2020 | (25) |
Emergency Extended Time Off Total Accrued | 588 | 0
Voluntary Separation Program 2020 and Extended Emergency Time Off Accrual for Employees who Accepted through June 30, 2020 |  | 307
Voluntary Separation Program 2020 and Extended Emergency Time Off Reduction for Employees who Accepted through September 30, 2020 | (198) |
Voluntary Separation Program 2020 and Extended Emergency Time Off Total Accrued | 1,207 | $ 307
Voluntary Separation Program 2020 Accrual for Employees who Accepted after June 30, 2020 | 485 |
Voluntary Separation Program 2020 Reduction for Employees who Accepted after June 30, 2020 | $ (173) |

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