Accumulated Other Comprehensive Income (Loss) (Details) (Schedule of Accumulated Other Comprehensive Income (Loss)) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Unrealized gains (losses) on available-for-sale securities:
Beginning Balance	$ 1	$ 1	$ 1	$ 1
Unrealized gains (losses) arising during the period, net of tax effects	0	0	0	0
Reclassification adjustment for (gains) losses realized and included in net loss, net of tax effects	0	0	0	0
Total other comprehensive income (loss)	0	0	0	0
Ending Balance	1	1	1	1
Unrealized gains (losses) on cash flow hedges:
Beginning balance	(13)	(4)	(6)	(3)
Unrealized gains (losses) arising during the period, net of tax effects	3	3	(8)	0
Reclassification adjustment for (gains) losses realized and included in net loss, net of tax effects	4	1	8	3
Total other comprehensive income (loss)	7	4	0	3
Ending balance	(6)	0	(6)	0
Total:
Beginning balance	(12)	(3)	(5)	(2)
Unrealized gains (losses) arising during the period, net of tax effects	3	3	(8)	0
Reclassification adjustment for (gains) losses realized and included in net loss, net of tax effects	4	1	8	3
Total other comprehensive income (loss)	7	4	0	3
Ending balance	$ (5)	$ 1	$ (5)	$ 1