XML 46 R25.htm IDEA: XBRL DOCUMENT
v3.21.1

Fair Value (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2021
Fair Value Disclosures [Abstract] |
Fair value, by balance sheet grouping | The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the fair value hierarchy as of March 31, 2021 and December 31, 2020 (in millions):
| March 31, 2021
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets |  |  |  |  |  |  |
Cash equivalents | $ | 1,240 |  |  | $ | 270 |  |  | $ | — |  |  | $ | 1,510 |
Available-for-sale investment securities | — |  |  | 867 |  |  | — |  |  | 867 |
| December 31, 2020
| Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets |  |  |  |  |  |  |
Cash equivalents | $ | 1,330 |  |  | $ | 130 |  |  | $ | — |  |  | $ | 1,460 |
Available-for-sale investment securities | — |  |  | 1,137 |  |  | — |  |  | 1,137 |
Refe r to Note 3 to ou r condensed consolidated financial statements for fair value information related to our outstanding debt obligations as of March 31, 2021 and December 31, 2020.

X
- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13467-108611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueByBalanceSheetGroupingTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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