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Earnings Per Share - Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Sep. 28, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Aug. 18, 2021
Jul. 31, 2021
May 20, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]              
Common stock outstanding (in shares)   428,000 428,000 434,000      
Authorized repurchase amount         $ 1,500   $ 500
Remaining authorized repurchase amount   $ 1,552 $ 1,552     $ 77  
Share repurchases (in shares)   770          
Treasury stock acquired, average price per share (in usd per share)   $ 32.50          
Repurchase of common stock   $ 25 $ 225 $ 51      
Decrease in average shares outstanding (in shares)     5,000        
Incremental common shares attributable to dilutive effect of accelerated share repurchase agreements (in shares)     7,000        
Revolving Credit Agreement              
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]              
Credit agreement term 5 years