Derivative and Hedging Activities - Cash Flow Hedges Components of AOCI Table (Details) (USD $) In Millions, unless otherwise specified			12 Months Ended					12 Months Ended							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Dec. 31, 2012 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Dec. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 30, 2012 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 30, 2011 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 31, 2012 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 31, 2011 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 31, 2010 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance Before Tax	Dec. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 30, 2012 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 30, 2011 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 31, 2012 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 31, 2011 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax	Dec. 31, 2010 Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member] Balance After Tax
Derivative [Line Items]
AOCI (Loss), Net of Tax - Period Start	$ (162)	$ (182)		$ (182)		$ (167)	$ (189)				$ (269)	$ (304)	$ (287)	$ (291)				$ (167)	$ (189)	$ (178)	$ (181)
Other Comprehensive Income Before Reclassifications, Net of Tax								3	10	368					2	6	228
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			24	24	20			32	(27)	(364)					20	(17)	(225)
AOCI (Loss), Net of Tax - Period End	$ (162)	$ (182)		$ (162)		$ (167)	$ (189)				$ (269)	$ (304)	$ (287)	$ (291)				$ (167)	$ (189)	$ (178)	$ (181)