Annual report pursuant to Section 13 and 15(d)

Earnings Per Share (Stock Repurchase Activity) (Details)

v3.20.4
Earnings Per Share (Stock Repurchase Activity) (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Shares  
Treasury stock, beginning (in shares) | shares 6,800,000
Treasury stock, acquired (in shares) | shares 900,000
Treasury stock, ending (in shares) | shares 7,700,000
Cost  
Treasury stock, cost, beginning | $ $ 363
Treasury stock, cost, acquired | $ 45
Treasury stock, cost, ending | $ $ 408
Average Price Per Share  
Treasury stock, average price per share, beginning (in usd per share) | $ / shares $ 53.67
Treasury stock, average price per share, acquired (in usd per share) | $ / shares 51.57
Treasury stock, average price per share, ending (in usd per share) | $ / shares $ 53.43