Preferred Stock (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012
Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, authorized (in shares)	3,000,000	3,000,000
ESOP
Class of Stock [Line Items]
Preferred stock, dividends per share	$ 5.46
Preferred shares, issued	803,953	803,953
Preferred shares, outstanding	167,053	186,553
Outstanding preferred shares, fair value	$ 69	$ 63
Preferred stock convertible at the option of the holder	4.9625
Preferred stock call price	$ 78