Debt and Capital Lease Obligations (Details) (USD $)									12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 A/R Sales Facility [Member]	Dec. 31, 2012 A/R Sales Facility [Member]	Dec. 31, 2011 A/R Sales Facility [Member]	Dec. 31, 2010 A/R Sales Facility [Member]	Dec. 31, 2013 Credit Facilities [Member] Bank Credit Facilities [Member]	Dec. 31, 2012 Credit Facilities [Member] Bank Credit Facilities [Member]	Dec. 31, 2013 Credit Facilities [Member] A/R Sales Facility [Member]	Dec. 31, 2012 Credit Facilities [Member] A/R Sales Facility [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2015 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2015 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In June 2013 [Member]	Jun. 30, 2013 Senior Notes [Member] Senior Notes Due In June 2013 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In June 2013 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2014 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2014 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In June 2017 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In June 2017 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2020 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2020 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In June 2037 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In June 2037 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In January 2013 [Member]	Jan. 31, 2013 Senior Notes [Member] Senior Notes Due In January 2013 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In January 2013 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In October 2037 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In October 2037 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In October 2017 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In October 2017 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2097 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2097 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2032 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2032 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2030 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2030 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2019 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2019 [Member]	Dec. 31, 2013 Senior Notes [Member] Senior Notes Due In 2039 [Member]	Dec. 31, 2012 Senior Notes [Member] Senior Notes Due In 2039 [Member]	Dec. 31, 2013 Debentures [Member] Debenture Due In 2026 [Member]	Dec. 31, 2012 Debentures [Member] Debenture Due In 2026 [Member]	Dec. 31, 2013 Debentures [Member] Debenture Due In 2015 [Member]	Dec. 31, 2012 Debentures [Member] Debenture Due In 2015 [Member]	Dec. 31, 2013 Revenue Bonds [Member] Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]	Dec. 31, 2012 Revenue Bonds [Member] Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]	Jun. 30, 2012 Revenue Bonds [Member] Gulf Opportunity Zone Revenue Bonds Series 2010 [Member]
Debt Instruments
Debt instruments maturity date (year)									2014		2015		2013			2014		2017		2020		2037		2013			2037		2017		2097		2032		2030		2019		2039		2026		2015		2040
Bank credit facilities							$ 0	$ 0
Senior notes											400,000,000	400,000,000	0		300,000,000	200,000,000	200,000,000	750,000,000	750,000,000	850,000,000	850,000,000	1,500,000,000	1,500,000,000	0		180,000,000	24,000,000	24,000,000	200,000,000	200,000,000	100,000,000	100,000,000	750,000,000	750,000,000	200,000,000	200,000,000	750,000,000	750,000,000	250,000,000	250,000,000
Debentures																																									100,000,000	100,000,000	75,000,000	75,000,000
Revenue bonds																																													300,000,000	300,000,000
Accounts receivable sales facility			100,000,000	100,000,000	250,000,000	100,000,000			100,000,000	100,000,000
Net unamortized discount, including fair value adjustments	(24,000,000)	(29,000,000)
Total debt	6,525,000,000	7,000,000,000
Capital lease obligations, including unamortized fair value adjustments	39,000,000	49,000,000
Total debt and capital lease obligations	6,564,000,000	7,049,000,000
Less current portion	(303,000,000)	(586,000,000)
Debt and capital lease obligations, less current portion	$ 6,261,000,000	$ 6,463,000,000
Interest rate of notes in percentage											4.50%		4.75%	4.75%		4.75%		6.125%		6.125%		6.625%		6.70%	6.70%		6.75%		7.20%		7.45%		7.50%		8.75%		9.375%		10.50%		7.65%		8.75%		4.00%		4.00%