XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.21.2

INVESTMENTS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2021
Investments, Debt and Equity Securities [Abstract] |
Investments by Major Security Type | The following table summarizes, by major security type, the Company's investments at September 30, 2021 (in millions):
|  | Cost |  | Gross Unrealized Gains /Upward Adjustments |  | Gross Unrealized Losses /Downward Adjustments |  | Carrying Value
Short-term investments: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Trip.com Group convertible debt securities |  | $ | 525 |  |  | $ | — |  |  | $ | (3) |  |  | $ | 522 |
Long-term investments: |  |  |  |  |  |  |  |
Investments in private companies: |  |  |  |  |  |  |  |
Debt securities |  | $ | 200 |  |  | $ | 130 |  |  | $ | — |  |  | $ | 330 |
Equity securities |  | 66 |  |  | 3 |  |  | — |  |  | 69 |
Other long-term investments: |  |  |  |  |  |  |  |
Equity securities |  | 963 |  |  | 2,115 |  |  | (194) |  |  | 2,884 |
Total |  | $ | 1,229 |  |  | $ | 2,248 |  |  | $ | (194) |  |  | $ | 3,283 |
The following table summarizes, by major security type, the Company's investments at December 31, 2020 (in millions):
|  | Cost |  | Gross Unrealized Gains/Upward Adjustments |  | Gross Unrealized Losses/Downward Adjustments |  | Carrying Value
Short-term investments: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Trip.com Group convertible debt securities |  | $ | 500 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 501 |
Long-term investments: |  |  |  |  |  |  |  |
Investments in private companies: |  |  |  |  |  |  |  |
Debt securities |  | $ | 200 |  |  | $ | — |  |  | $ | — |  |  | $ | 200 |
Equity securities |  | 552 |  |  | 3 |  |  | (100) |  |  | 455 |
Other long-term investments: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Trip.com Group convertible debt securities |  | 25 |  |  | — |  |  | (1) |  |  | 24 |
Equity securities |  | 463 |  |  | 2,617 |  |  | — |  |  | 3,080 |
Total |  | $ | 1,240 |  |  | $ | 2,620 |  |  | $ | (101) |  |  | $ | 3,759 |

X
- Definition Tabular disclosure of investment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -URI http://asc.fasb.org/topic&trid=2197064 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -URI http://asc.fasb.org/topic&trid=75115024 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
Name: | us-gaap_InvestmentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration