Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) (Details) (Schedule of Accumulated Other Comprehensive Income (Loss))

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Accumulated Other Comprehensive Income (Loss) (Details) (Schedule of Accumulated Other Comprehensive Income (Loss)) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Unrealized gains (losses) on cash flow hedges:        
Beginning balance $ (4) $ (3) $ (3) $ (5)
Unrealized gains (losses) arising during period, net of tax (2) (1) (3) 0
Reclassification adjustment for (gains) losses realized and included in net income (loss), net of tax 0 0 0 1
Other comprehensive income (loss), cash flow hedges, net of tax (2) (1) (3) 1
Ending balance (6) (4) (6) (4)
Total:        
Beginning balance (4) (3) (3) (5)
Other comprehensive income (loss), unrealized gain (loss), net of tax (2) (1) (3) 0
Other comprehensive income (loss), reclassification adjustment, net of tax 0 0 0 1
Total other comprehensive income (loss) (2) (1) (3) 1
Ending balance $ (6) $ (4) $ (6) $ (4)