Accumulated Other Comprehensive Income and Supplemental Equity Information Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	$ 56	$ 21	$ 46	$ 46
Other comprehensive income (loss) before reclassifications	(19)	(12)	(9)	(37)
Amounts reclassified to net earnings from accumulated other comprehensive income	0	(3)	0	(3)
Other comprehensive income (loss), net of tax	(19)	(15)	(9)	(40)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	37	6	37	6
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	19	17	20
Other comprehensive income (loss) before reclassifications	1	2	1	1
Amounts reclassified to net earnings from accumulated other comprehensive income	0	(3)	0	(3)
Other comprehensive income (loss), net of tax	1	(1)	1	(2)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	18	18	18	18
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	3	3	0
Other comprehensive income (loss) before reclassifications	0	0	0	3
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), net of tax	0	0	0	3
Accumulated other comprehensive income (loss), net of tax, Ending Balance	3	3	3	3
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), net of tax, Beginning Balance	36	(1)	26	26
Other comprehensive income (loss) before reclassifications	(20)	(14)	(10)	(41)
Amounts reclassified to net earnings from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), net of tax	(20)	(14)	(10)	(41)
Accumulated other comprehensive income (loss), net of tax, Ending Balance	$ 16	$ (15)	$ 16	$ (15)