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Other Financial Information (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Prepaid Expenses and Other Current Assets [Abstract] |  |
Prepaid expenses | $ 481 | $ 395
Income tax receivable | 11 | 273
Materials, supplies and inventory | 193 | 209
Contract assets | 18 | 19
Assets held for sale | 104 | 104
Other | 18 | 14
Total other current assets | 1,033 | 1,223
Acquisition Costs |  |
Prepaid Expenses and Other Current Assets [Abstract] |  |
Contract costs | 106 | 107
Fulfillment Costs |  |
Prepaid Expenses and Other Current Assets [Abstract] |  |
Contract costs | $ 102 | $ 102

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