Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 29, 2012
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2013	$ 41
Amount of operating and capital loss carryforwards due to expire between 2014 and 2017	301
Amount of operating and capital loss carryforwards due to expire between 2018 and 2032	1,072
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	841
Total operating and capital loss carryforwards	2,255
Foreign [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2013	21
Amount of operating and capital loss carryforwards due to expire between 2014 and 2017	66
Amount of operating and capital loss carryforwards due to expire between 2018 and 2032	121
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	836
Total operating and capital loss carryforwards	1,044
U.S. state [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2013	20
Amount of operating and capital loss carryforwards due to expire between 2014 and 2017	128
Amount of operating and capital loss carryforwards due to expire between 2018 and 2032	848
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	5
Total operating and capital loss carryforwards	1,001
U.S. federal [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2013	0
Amount of operating and capital loss carryforwards due to expire between 2014 and 2017	107
Amount of operating and capital loss carryforwards due to expire between 2018 and 2032	103
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	0
Total operating and capital loss carryforwards	$ 210