Debt (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended										1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended			1 Months Ended
	Feb. 28, 2011	Oct. 01, 2011	Oct. 02, 2010	Apr. 02, 2011 Prior To Credit Rating Adjustment [Member] 2016 Notes [Member]	Aug. 19, 2010 Prior To Credit Rating Adjustment [Member] 2016 Notes [Member]	Nov. 13, 2008 Prior To Credit Rating Adjustment [Member] 2016 Notes [Member]	Apr. 02, 2011 2016 Notes [Member]	Aug. 19, 2010 2016 Notes [Member]	Nov. 13, 2008 2016 Notes [Member]	Sep. 27, 2008 2016 Notes [Member]	Mar. 31, 2009 10.50% Senior Notes Due March 2014 [Member]	Oct. 01, 2011 10.50% Senior Notes Due March 2014 [Member]	Sep. 30, 2008 3.25% Convertible Senior Unsecured Notes Due October 15, 2013 [Member] years	Oct. 01, 2011 3.25% Convertible Senior Unsecured Notes Due October 15, 2013 [Member]	Oct. 01, 2011 3.25% Convertible Senior Unsecured Notes Due October 15, 2013 [Member] Conversion Eligibility Provision [Member]	Nov. 30, 2008 GO Zone Tax-Exempt Bonds Due October 2033 [Member]	Oct. 01, 2011 GO Zone Tax-Exempt Bonds Due October 2033 [Member]	Oct. 01, 2011 Standby Letters Of Credit [Member]	Oct. 01, 2011 Bilateral Letters Of Credit [Member]	Oct. 31, 2008 GO Zone Tax-Exempt Bonds [Member]
Debt Instrument [Line Items]
Amount available under this facility	$ 1,000,000,000
Line of credit facility, termination date	February 2016
Amount available for borrowing		842,000,000
Letters of credit issued amount																		158,000,000
Bilateral letters of credit																			50,000,000
Debt instrument, face amount											810,000,000		458,000,000
Interest rate										6.60%		10.50%	3.25%	3.25%
Interest rate at period end				7.35%	7.85%	7.35%	6.85%	7.35%	7.85%								0.14%
Maturity date												Mar. 01, 2014		Oct. 15, 2013			Oct. 01, 2033
Conversion rate													59.1935
Trading days															least 20 trading days during a period of 30 consecutive trading days
Principal amounts for conversion													1,000		1,000
Conversion price, per share													$ 16.89
Minimum percentage of exchange price															130.00%
Minimum trade price															$ 21.96
Measurement period															five business days after any 10 consecutive trading days
Percentage trading price per principal amount, upper limit															98.00%
Discount on note													92,000,000
After tax amount recorded to capital in excess of par value													56,000,000
Discount accretion term													5
Debt instrument, interest rate, effective percentage													8.26%
Reduction to capital in excess of par value due to the purchase of note hedge transactions													36,000,000
Call options purchased in private transactions													94,000,000
Number of class A stock that can be acquired through call options													27
Proceeds from sale of warrants													44,000,000
Shares able to be purchased through warrants													27
Exercise price of warrants, per share													22.31
Warrant exercise price date start													Jan. 01, 2014
Warrant exercise price date end													Mar. 31, 2014
Interest rate swap period in force																5 years
Maximum amount of shares that may be issued to satisfy conversion													35.9
Conversion price factoring convertible note hedge and warrant transactions, per share													$ 22.31
Increase in stock price that would result in the issuance of additional stock													10.00%
Additional stock issuance if increase in share price													2.5
Proceeds from the sale of Gulf Opportunity Zone tax-exempt bonds																				100,000,000
Maturities of debt in 2012		70,000,000
Maturities of debt in 2013		17,000,000
Maturities of debt in 2014		1,279,000,000
Maturities of debt in 2015		7,000,000
Maturities of debt in 2016		643,000,000
Discount on senior notes		$ 76,000,000	$ 105,000,000								$ 59,000,000
Issue price percent of face value											92.756%