Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) (Details)

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 24, 2016
Sep. 30, 2017
Sep. 24, 2016
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance     $ 416  
Total other comprehensive income $ 2 $ 0 7 $ 5
Ending balance 520   520  
Unrealized gains (losses) on available-for-sale securities        
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance (1) (2) (1) (1)
Unrealized gains (losses) arising during the period 0 1 0 (1)
Reclassification adjustment for (gains) losses realized and included in net income (loss) 0 0 0 0
Tax effect 0 0 0 1
Total other comprehensive income 0 1 0 0
Ending balance (1) (1) (1) (1)
Unrealized gains (losses) on cash flow hedges        
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance 1 (1) (4) (7)
Unrealized gains (losses) arising during the period 6 0 14 7
Reclassification adjustment for (gains) losses realized and included in net income (loss) (4) (1) (5) 1
Tax effect 0 0 (2) (3)
Total other comprehensive income 2 (1) 7 5
Ending balance 3 (2) 3 (2)
Total        
Changes in Accumulated Other Comprehensive Income (Loss) [Roll Forward]        
Beginning balance 0 (3) (5) (8)
Unrealized gains (losses) arising during the period 6 1 14 6
Reclassification adjustment for (gains) losses realized and included in net income (loss) (4) (1) (5) 1
Tax effect 0 0 (2) (2)
Total other comprehensive income 2 0 7 5
Ending balance $ 2 $ (3) $ 2 $ (3)