Financial Instruments - Investment Securities (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Investment securities, gross unrealized gains	$ 0		$ 0		$ 2,000,000
Investment securities, gross unrealized losses	0		0		0
Equity securities, amortized cost	2,000,000		2,000,000		24,000,000
Equity securities, estimated fair value	2,000,000		2,000,000		24,000,000
Total, amortized cost	101,000,000		101,000,000		281,000,000
Investment securities	101,000,000		101,000,000		283,000,000
Net unrealized gain (loss)	0	$ 0	(12,000,000)	$ 1,000,000
Non-U.S. debt securities
Debt Securities, Available-for-sale [Line Items]
Investment securities, amortized cost	99,000,000		99,000,000		257,000,000
Investment securities, gross unrealized gains	0		0		2,000,000
Investment securities, gross unrealized losses	0		0		0
Investment securities	$ 99,000,000		$ 99,000,000		$ 259,000,000
Derivative, term			2 years

Investments, Fair Value Disclosure, Amortized Cost

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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No definition available.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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