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CASH, CASH EQUIVALENTS, AND INVESTMENTS - Summary of Debt Securities (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | $ 531 | $ 497
Unrealized Losses, Less than 12 Months | (5) | (1)
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 531 | 497
Unrealized Losses, Total | (5) | (1)
Money market funds |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | 324 | 259
Unrealized Losses, Less than 12 Months | 0 | 0
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 324 | 259
Unrealized Losses, Total | 0 | 0
Corporate debt securities |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | 165 | 207
Unrealized Losses, Less than 12 Months | (5) | (1)
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 165 | 207
Unrealized Losses, Total | (5) | (1)
Commercial paper |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | 28 | 15
Unrealized Losses, Less than 12 Months | 0 | 0
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 28 | 15
Unrealized Losses, Total | 0 | 0
Certificates of deposit |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | 9 | 5
Unrealized Losses, Less than 12 Months | 0 | 0
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 9 | 5
Unrealized Losses, Total | 0 | 0
Asset-backed securities |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months | 5 | 7
Unrealized Losses, Less than 12 Months | 0 | 0
Fair Value, 12 Months or Greater | 0 | 0
Unrealized Losses 12 Months or Greater | 0 | 0
Fair Value, Total | 5 | 7
Unrealized Losses, Total | $ 0 | 0
Sovereign bonds |  |
Cash and Cash Equivalents [Line Items] |  |
Fair Value, Less than 12 Months |  | 4
Unrealized Losses, Less than 12 Months |  | 0
Fair Value, 12 Months or Greater |  | 0
Unrealized Losses 12 Months or Greater |  | 0
Fair Value, Total |  | 4
Unrealized Losses, Total |  | $ 0

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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