XML 45 R28.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Investments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Investments |
Schedule of investments | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(in millions) | ​ | 2021 | ​ | 2020
Equity investments | ​ | $ | 16 | ​ | $ | 8
Equity method investments | ​ | ​ | 104 | ​ | ​ | 10
Marketable securities | ​ | ​ | 12 | ​ | ​ | 11
Total investments | ​ | $ | 132 | ​ | $ | 29

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_InvestmentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration