Accumulated Other Comprehensive Income Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014	Mar. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	$ 46	$ 46
Other comprehensive income (loss) before reclassifications	10	(25)
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	10	(25)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	56	21
Unrealized gain (loss) on available-for-sale securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	17	20
Other comprehensive income (loss) before reclassifications	0	(1)
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	0	(1)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	17	19
Unrealized gain (loss) on derivative instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	3	0
Other comprehensive income (loss) before reclassifications	0	3
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	0	3
Accumulated other comprehensive income (loss), net of tax, Ending Balance	3	3
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	26	26
Other comprehensive income (loss) before reclassifications	10	(27)
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0
Other comprehensive income (loss)	10	(27)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	$ 36	$ (1)