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Marketable and Other Securities - Fair Value of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | $ 16,133 |
Total cash and cash equivalents | 20,067 | $ 19,992
Cash and cash equivalents | 466 | 269
Total restricted cash | 3,475 | 3,125
Due in one year or less | 12,003 |
Due between one and five years | 4,130 |
Total available-for-sale debt securities with contractual maturities | 16,133 |
Cruise |  |
Marketable Securities [Line Items] |  |
Total cash and cash equivalents | 1,600 | 761
Cash and cash equivalents |  |
Marketable Securities [Line Items] |  |
Cash and time deposits | 7,881 | 8,010
Total available-for-sale debt securities with contractual maturities | 8,148 | 6,897
Total available-for-sale debt securities with contractual maturities | 8,148 | 6,897
Cash and cash equivalents | Level 2 | U.S. government and agencies |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 722 | 1,370
Total available-for-sale debt securities with contractual maturities | 722 | 1,370
Cash and cash equivalents | Level 2 | Corporate debt |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 5,321 | 3,476
Total available-for-sale debt securities with contractual maturities | 5,321 | 3,476
Cash and cash equivalents | Level 2 | Sovereign debt |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 2,105 | 2,051
Total available-for-sale debt securities with contractual maturities | 2,105 | 2,051
Cash and cash equivalents | Level 1 |  |
Marketable Securities [Line Items] |  |
Money market funds | 4,038 | 5,085
Marketable debt securities |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 8,609 | 9,046
Total available-for-sale debt securities with contractual maturities | 8,609 | 9,046
Marketable debt securities | Cruise |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 1,500 | 943
Total available-for-sale debt securities with contractual maturities | 1,500 | 943
Marketable debt securities | Level 2 | U.S. government and agencies |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 2,071 | 1,771
Total available-for-sale debt securities with contractual maturities | 2,071 | 1,771
Marketable debt securities | Level 2 | Corporate debt |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 3,396 | 3,630
Total available-for-sale debt securities with contractual maturities | 3,396 | 3,630
Marketable debt securities | Level 2 | Sovereign debt |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 2,567 | 3,013
Total available-for-sale debt securities with contractual maturities | 2,567 | 3,013
Marketable debt securities | Level 2 | Mortgage and asset-backed |  |
Marketable Securities [Line Items] |  |
Total available-for-sale debt securities with contractual maturities | 575 | 632
Total available-for-sale debt securities with contractual maturities | 575 | 632
Restricted cash - cash equivalents | Level 1 |  |
Marketable Securities [Line Items] |  |
Money market funds | $ 3,009 | $ 2,856

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