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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Millions
Total
Cumulative effect from the adoption of new accounting standard
Common Stock 
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Retained Earnings
Cumulative effect from the adoption of new accounting standard
Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2019     1,266,000,000          
Beginning balance at Dec. 31, 2019 $ 22,650 $ (7) $ 1 $ 3,051 $ 85 $ 19,388 $ (7) $ 125
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income (loss) 1,538         1,551   (13)
Other comprehensive income (loss), net of tax (39)       (39)      
Issuances under employee stock purchase plan (in shares)     1,000,000          
Issuances under employee stock purchase plan 66     66        
Issuance under equity incentive plans (in shares)     7,000,000          
Issuances under equity incentive plans 111     111        
Stock-based compensation 141     141        
Repurchases of common stock (in shares)     (20,000,000)          
Repurchases of common stock (1,414)     (58)   (1,356)    
Dividends declared (867)         (867)    
Ending balance (in shares) at Mar. 31, 2020     1,254,000,000          
Ending balance at Mar. 31, 2020 $ 22,179   $ 1 3,311 46 18,709   112
Beginning balance (in shares) at Dec. 31, 2020 1,254,000,000   1,254,000,000          
Beginning balance at Dec. 31, 2020 $ 18,221   $ 1 3,880 (60) 14,381   19
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income (loss) 1,722         1,729   (7)
Other comprehensive income (loss), net of tax 98       98      
Issuances under employee stock purchase plan (in shares)     1,000,000          
Issuances under employee stock purchase plan 76     76        
Issuance under equity incentive plans (in shares)     5,000,000          
Issuances under equity incentive plans 12     12        
Stock-based compensation 140     140        
Repurchases of common stock (in shares)     (6,000,000)          
Repurchases of common stock (399)     (16)   (383)    
Dividends declared $ (906)         (906)    
Ending balance (in shares) at Mar. 31, 2021 1,254,000,000   1,254,000,000          
Ending balance at Mar. 31, 2021 $ 18,964   $ 1 $ 4,092 $ 38 $ 14,821   $ 12