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Derivative and Financial Instruments - Financial Instruments Fair Value (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | $ 9
Short Term Investments At Fair Value | 99
Investments and Long Term Receivable Carried At Fair Value | 133
Corporate Debt [Member] | Remaining maturities within one year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 1
Short Term Investments At Fair Value | 59
Investments and Long Term Receivable Carried At Fair Value | 0
Corporate Debt [Member] | Remaining Maturities Greater Than One Year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 0
Short Term Investments At Fair Value | 0
Investments and Long Term Receivable Carried At Fair Value | 99
Commercial Paper [Member] | Remaining maturities within one year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 8
Short Term Investments At Fair Value | 30
Investments and Long Term Receivable Carried At Fair Value | 0
US Government Debt Securities [Member] | Remaining maturities within one year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 0
Short Term Investments At Fair Value | 10
Investments and Long Term Receivable Carried At Fair Value | 0
US Government Debt Securities [Member] | Remaining Maturities Greater Than One Year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 0
Short Term Investments At Fair Value | 0
Investments and Long Term Receivable Carried At Fair Value | 15
Asset-backed Securities [Member] | Remaining Maturities Greater Than One Year [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Cash and Cash Equivalents, carried at fair value | 0
Short Term Investments At Fair Value | 0
Investments and Long Term Receivable Carried At Fair Value | $ 19

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