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Other Financial Data - Stockholders' Equity (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Payments for repurchased shares $ 105   $ 441 $ 170
Number of shares repurchased (in shares) 0.7   2.9  
Repurchase of common shares, average cost (in USD per share) $ 147.35   $ 152.79  
Amount available for future share repurchase $ 820   $ 820  
Cash dividends paid $ 109 $ 94 $ 327 $ 281