Equity Incentive Compensation Plans and Other Benefit Plans (Director Fees and Other Employee Benefits-401(k) Plan) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 16, 2013	Dec. 31, 2012
Other employee benefits—401(k) plan
Company match of employee's contributions (as a percent)	100.00%
Employee participation in 401(k) Plan (as a percent)	93.00%
Company's contributions to 401(k) Plan, net of forfeitures	$ 2	$ 2
Maximum
Other employee benefits—401(k) plan
Company match of employee's eligible compensation (as a percent)	8.00%
Director [Member]
Director fees
Shares earned and deferred in accordance with the plan (in shares)	10,758	12,797