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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 (Loss)
Retained Earnings
Retained Earnings
Cumulative effect from the adoption of new accounting standard
Noncontrolling Interest
Beginning period (in shares) at Dec. 31, 2018     1,282          
Beginning balance at Dec. 31, 2018 $ 21,534 $ 8 $ 1 $ 2,282 $ 80 $ 19,024 $ 8 $ 147
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income (loss) 5,364         5,386   (22)
Other comprehensive income (loss), net of tax 5       5      
Issuances under employee stock purchase plan (in shares)     2          
Issuances under employee stock purchase plan 90     90        
Issuance under equity incentive plans (in shares)     10          
Issuances under equity incentive plans 118     118        
Stock-based compensation 638     638        
Repurchases of common stock (in shares)     (28)          
Repurchases of common stock (1,868)     (77)   (1,791)    
Dividends declared (3,239)         (3,239)    
Ending period (in shares) at Dec. 31, 2019     1,266          
Ending 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) 89         123   (34)
Other comprehensive income (loss), net of tax (145)     1 (145) (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)     11          
Issuances under equity incentive plans 156     156        
Stock-based compensation 642     642        
Repurchases of common stock (in shares)     (25)          
Repurchases of common stock (1,728)     (70)   (1,658)    
Dividends declared $ (3,464)         (3,464)    
Ending period (in shares) at Dec. 31, 2020 1,254   1,254          
Ending balance at Dec. 31, 2020 $ 18,221   $ 1 3,880 (60) 14,381   19
Increase (Decrease) in Stockholders' Equity [Roll Forward]                
Net income (loss) 6,201         6,225   (24)
Other comprehensive income (loss), net of tax 143     0 143 0    
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 58     58        
Stock-based compensation 640     640        
Repurchases of common stock (in shares)     (11)          
Repurchases of common stock (692)     (28)   (664)    
Dividends declared $ (3,618)         (3,618)    
Ending period (in shares) at Dec. 31, 2021 1,254   1,254          
Ending balance at Dec. 31, 2021 $ 21,064   $ 1 $ 4,661 $ 83 $ 16,324   $ (5)