Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified	Dec. 28, 2013
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2014	$ 54
Amount of operating and capital loss carryforwards due to expire between 2015 and 2018	327
Amount of operating and capital loss carryforwards due to expire between 2019 and 2033	1,195
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	325
Total operating and capital loss carryforwards	1,901
Foreign [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2014	38
Amount of operating and capital loss carryforwards due to expire between 2015 and 2018	132
Amount of operating and capital loss carryforwards due to expire between 2019 and 2033	91
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	325
Total operating and capital loss carryforwards	586
U.S. state [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2014	16
Amount of operating and capital loss carryforwards due to expire between 2015 and 2018	105
Amount of operating and capital loss carryforwards due to expire between 2019 and 2033	1,040
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	0
Total operating and capital loss carryforwards	1,161
U.S. federal [Member]
Operating and capital loss carryforwards [Line Items]
Amount of operating and capital loss carryforwards due to expire in 2014	0
Amount of operating and capital loss carryforwards due to expire between 2015 and 2018	90
Amount of operating and capital loss carryforwards due to expire between 2019 and 2033	64
Amount of operating and capital loss carryforwards which may be carried forward indefinitely	0
Total operating and capital loss carryforwards	$ 154