Cost of Equity Secuirites without readily determinable fair value

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- Definition

Proceeds from Sale of Equity Securities, FV-NI

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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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).

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

No definition available.

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- Definition

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

+ 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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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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.

+ References

No definition available.

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- Definition

Amount of unrealized and realized 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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-Publisher FASB
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- Definition

Amount of investment in equity security without readily determinable fair value.

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- Definition

Amount of impairment loss on investment in equity security without readily determinable fair value.

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- Definition

Amount of cash inflow from sale 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

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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No definition available.

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INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2016
Schedule of Investments [Line Items]
Proceeds from sale of available-for-sale debt securities				$ 2,200
Net gains/(losses) on marketable equity securities	$ 835		$ 17	528	$ 468
Cost of investment						$ 501
Impairment of investment	0		0	100	0
Trip.com Group
Schedule of Investments [Line Items]
Proceeds from sale of securities				525
Net gains/(losses) on marketable equity securities	17		(147)	(201)	213
Trip.com Group \| Trip.com Group convertible debt securities
Schedule of Investments [Line Items]
Amortized cost of available-for-sale debt securities	525			525
Trip.com Group 1% Note Due 2020 [Member] \| Trip.com Group convertible debt securities
Schedule of Investments [Line Items]
Amortized cost of available-for-sale debt securities	250			250
Meituan-Dianping [Member]
Schedule of Investments [Line Items]
Fair value of equity securities	1,800			1,800		1,100
Net gains/(losses) on marketable equity securities	813		$ 164	732	$ 255
Payments to acquire investments							$ 450
Long-term Investments \| Investment in private company equity securities
Schedule of Investments [Line Items]
Cost of investment	501			501		501
Impairment of investment		$ 100
Investment in equity securities without readily determinable FV	401			401		501
Long-term Investments \| Redeemable Convertible Preferred Stock [Member]
Schedule of Investments [Line Items]
Amortized cost of available-for-sale debt securities	250			250
Carrying Value	250			250
Long-term Investments \| Trip.com Group
Schedule of Investments [Line Items]
Cost of investment in equity securities						655
Fair value of equity securities						726
Long-term Investments \| Trip.com Group \| Trip.com Group convertible debt securities
Schedule of Investments [Line Items]
Amortized cost of available-for-sale debt securities	525			525		775
Carrying Value	500			500		767
Long-term Investments \| Trip.com Group 1.25% Notes due 2022 \| Trip.com Group convertible debt securities
Schedule of Investments [Line Items]
Amortized cost of available-for-sale debt securities								$ 25
Long-term Investments \| Didi Chuxing \| Investment in private company equity securities
Schedule of Investments [Line Items]
Cost of investment	500			500		500
Investment in equity securities without readily determinable FV	400	400		400
Long-term Investments \| Grab \| Redeemable Convertible Preferred Stock [Member]
Schedule of Investments [Line Items]
Carrying Value	200			$ 200		$ 200
Debt Securities, Available-for-sale, Unrealized Gain (Loss)	$ 20	$ (20)