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Cash and Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2019

Cash and Marketable Securities [Abstract]

Schedule Of Amortized Cost, Fair Value And Gross Unrealized Gains And Losses Of The Company's Short- And Long-Term Investments

					Gross			Gross
		Amortized			Unrealized			Unrealized			Fair
(In millions)		Cost			Gains			Losses			Value
Available-for-sale securities, September 30, 2019
Debt securities		$	7		$	—		$	—		$	7
Available-for-sale securities, December 31, 2018
Debt securities		$	9		$	—		$	—		$	9

Schedule Of Proceeds From Sale Of Securities, Maturities Of Available-for-sale Securities And Gross Realized (Gains) Losses

		Three Months Ended						Nine Months Ended
		September 30,						September 30,
(In millions)		2019			2018			2019			2018
Proceeds from sale of securities		$	—		$	16		$	—		$	17
Maturities of securities			5			6			9			15

X

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References

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- Definition

Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563

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