Accumulated Other Comprehensive Income (Loss) (Details) (Schedule of Accumulated Other Comprehensive Income (Loss)) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 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	(3)	0	(3)	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)	(3)	0	(3)	0
Ending Balance	(2)	1	(2)	1
Unrealized gains (losses) on cash flow hedges:
Beginning balance	(6)	0	(6)	(3)
Unrealized gains (losses) arising during the period, net of tax effects	(13)	(3)	(21)	(3)
Reclassification adjustment for (gains) losses realized and included in net loss, net of tax effects	6	1	14	4
Total other comprehensive income (loss)	(7)	(2)	(7)	1
Ending balance	(13)	(2)	(13)	(2)
Total:
Beginning balance	(5)	1	(5)	(2)
Unrealized gains (losses) arising during the period, net of tax effects	(16)	(3)	(24)	(3)
Reclassification adjustment for (gains) losses realized and included in net loss, net of tax effects	6	1	14	4
Total other comprehensive income (loss)	(10)	(2)	(10)	1
Ending balance	$ (15)	$ (1)	$ (15)	$ (1)