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Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 | Jun. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Expense related to valuation of inventory | $ 20 |  |  |
Accrued freight charges adjustments |  | $ 8 |  |
Prepaid Expenses and Other Current Assets |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Restricted cash |  |  | $ 68 | $ 56
Other Assets |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Restricted cash |  |  | $ 11 | $ 15

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