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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Millions, $ in Millions
Total
Cumulative effect from the adoption of new accounting standard
Common Stock 
Additional Paid-In Capital
Accumulated Other Comprehensive Income
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          
Beginning balance at Dec. 31, 2019 $ 22,650 $ (7) $ 1 $ 3,051 $ 85 $ 19,388 $ (7) $ 125
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Change in noncontrolling interest (72)             (72)
Net income (loss) (1,455)         (1,428)   (27)
Other comprehensive income (loss), net of tax (62)     1 (62) (1)    
Issuances under employee stock purchase plan (in shares)     2          
Issuances under employee stock purchase plan 100     100        
Issuance under equity incentive plans (in shares)     10          
Issuances under equity incentive plans 148     148        
Stock-based compensation 482     482        
Repurchases of common stock (in shares)     (25)          
Repurchases of common stock (1,714)     (70)   (1,644)    
Dividends declared (2,599)         (2,599)    
Ending balance (in shares) at Sep. 30, 2020     1,253          
Ending balance at Sep. 30, 2020 17,471   $ 1 3,712 23 13,709   26
Beginning balance (in shares) at Jun. 30, 2020     1,254          
Beginning balance at Jun. 30, 2020 18,142   $ 1 3,511 70 14,445   115
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Change in noncontrolling interest (82)             (82)
Net income (loss) 353         360   (7)
Other comprehensive income (loss), net of tax (47)     1 (47) (1)    
Issuances under employee stock purchase plan (in shares)     1          
Issuances under employee stock purchase plan 34     34        
Issuance under equity incentive plans (in shares)     2          
Issuances under equity incentive plans 2     2        
Stock-based compensation 173     173        
Repurchases of common stock (in shares)     (4)          
Repurchases of common stock (238)     (9)   (229)    
Dividends declared (866)         (866)    
Ending balance (in shares) at Sep. 30, 2020     1,253          
Ending balance at Sep. 30, 2020 $ 17,471   $ 1 3,712 23 13,709   26
Beginning balance (in shares) at Dec. 31, 2020 1,254   1,254          
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) 5,825         5,843   (18)
Other comprehensive income (loss), net of tax 134       134      
Issuances under employee stock purchase plan (in shares)     2          
Issuances under employee stock purchase plan 111     111        
Issuance under equity incentive plans (in shares)     9          
Issuances under equity incentive plans 46     46        
Stock-based compensation 479     479        
Repurchases of common stock (in shares)     (10)          
Repurchases of common stock (631)     (24)   (607)    
Dividends declared $ (2,714)         (2,714)    
Ending balance (in shares) at Sep. 30, 2021 1,255   1,255          
Ending balance at Sep. 30, 2021 $ 21,471   $ 1 4,492 74 16,903   1
Beginning balance (in shares) at Jun. 30, 2021     1,254          
Beginning balance at Jun. 30, 2021 19,710   $ 1 4,271 39 15,392   7
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income (loss) 2,586         2,592   (6)
Other comprehensive income (loss), net of tax 35       35      
Issuances under employee stock purchase plan (in shares)     1          
Issuances under employee stock purchase plan 35     35        
Issuance under equity incentive plans (in shares)     3          
Issuances under equity incentive plans 22     22        
Stock-based compensation 171     171        
Repurchases of common stock (in shares)     (3)          
Repurchases of common stock (183)     (7)   (176)    
Dividends declared $ (905)         (905)    
Ending balance (in shares) at Sep. 30, 2021 1,255   1,255          
Ending balance at Sep. 30, 2021 $ 21,471   $ 1 $ 4,492 $ 74 $ 16,903   $ 1