Quarterly report pursuant to Section 13 or 15(d)

Earnings/(Loss) Per Share (Current Stock Repurchase Program) (Details)

v3.21.2
Earnings/(Loss) Per Share (Current Stock Repurchase Program) (Details)
$ in Millions
9 Months Ended
Sep. 30, 2021
USD ($)
shares
Stock Repurchase Activity [Roll Forward]  
As of December 31, 2020 | shares 135,824,676
As of September 30, 2021 | shares 135,824,676
Stock Repurchase Program [Member]  
Stock Repurchase Activity [Roll Forward]  
As of December 31, 2020 | shares 111,300,000
Repurchases | shares 0
As of September 30, 2021 | shares 111,300,000
As of December 31, 2020 | $ $ 5,727
Cost of repurchases | $ 0
As of September 30, 2021 | $ 5,727
Proceeds from Stock Options Exercised | $ 4
Remaining authorized amount under share repurchases | $ $ 354