XML 56 R45.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value of Financial Investments (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
May 31, 2021
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Feb. 18, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Proceeds from redemption of preferred stock $ 166            
Gain on preferred stock redemption $ 14 $ 14 $ 0 $ 14 $ 0    
Dividend income   3 $ 4 6 $ 4    
Estimate of Fair Value Measurement              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Estimated market value of long-term and short-term debt   3,200   3,200   $ 3,300  
Carrying Value Reported Value Measurement              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Aggregate carrying value of long-term and short-term debt   3,000   3,000   2,800  
ACProducts Preferred Stock              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Investments, fair value disclosure             $ 136
ACProducts Preferred Stock | Other Assets              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Investments           $ 146  
ACProducts Holding, Inc              
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]              
Preferred stock, liquidation preference, value   $ 150   $ 150