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Stockholders’ Equity (Tables)
3 Months Ended
Mar. 31, 2021
Equity [Abstract]  
Summary of stock repurchase activity under stock repurchase program
The stock repurchase activity under our stock repurchase programs during the three months ended March 31, 2021 is summarized as follows (in millions, except per share amounts):

Shares Repurchased (1)
Average Price per Share (2)
Value of Shares Repurchased (2)
Remaining Amount Authorized
Balance as of January 1, 2021$2,033 
Authorization of additional plan in February 20214,000 
Repurchase of shares of common stock $55.70 $292 (292)
Balance as of March 31, 2021$5,741 

(1)These repurchased shares of common stock were recorded as treasury stock and were accounted for under the cost method. None of the repurchased shares of common stock have been retired.
(2)Excludes broker commissions.