Debt And Financing Arrangements (Long-Term Debt) (Details) (USD $)						1 Months Ended	6 Months Ended			1 Months Ended	6 Months Ended				6 Months Ended			1 Months Ended	6 Months Ended					6 Months Ended			6 Months Ended				1 Months Ended	6 Months Ended				6 Months Ended			6 Months Ended			6 Months Ended					6 Months Ended					6 Months Ended					6 Months Ended					6 Months Ended					6 Months Ended					6 Months Ended			6 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Feb. 28, 2007 Convertible senior notes point eight seven five percent due two thousand fourteen [Member]	Dec. 31, 2012 Convertible senior notes point eight seven five percent due two thousand fourteen [Member]	Jun. 30, 2012 Convertible senior notes point eight seven five percent due two thousand fourteen [Member]	Jun. 30, 2011 Convertible senior notes point eight seven five percent due two thousand fourteen [Member]	Mar. 31, 2011 Debentures four point four seven nine percent due in two thousand twenty one [Member]	Dec. 31, 2012 Debentures four point four seven nine percent due in two thousand twenty one [Member]	Jun. 30, 2012 Debentures four point four seven nine percent due in two thousand twenty one [Member]	Jun. 30, 2011 Debentures four point four seven nine percent due in two thousand twenty one [Member]	Mar. 30, 2011 Debentures four point four seven nine percent due in two thousand twenty one [Member]	Dec. 31, 2012 Debentures five point four five percent due in two thousand eighteen [Member]	Jun. 30, 2012 Debentures five point four five percent due in two thousand eighteen [Member]	Jun. 30, 2011 Debentures five point four five percent due in two thousand eighteen [Member]	Mar. 31, 2011 Debentures five point seven six five percent due in two thousand forty one [Member]	Dec. 31, 2012 Debentures five point seven six five percent due in two thousand forty one [Member]	Oct. 31, 2012 Debentures five point seven six five percent due in two thousand forty one [Member]	Jun. 30, 2012 Debentures five point seven six five percent due in two thousand forty one [Member]	Jun. 30, 2011 Debentures five point seven six five percent due in two thousand forty one [Member]	Mar. 30, 2011 Debentures five point seven six five percent due in two thousand forty one [Member]	Dec. 31, 2012 Debentures five point three seven five percent due in two thousand thirty five [Member}	Jun. 30, 2012 Debentures five point three seven five percent due in two thousand thirty five [Member}	Jun. 30, 2011 Debentures five point three seven five percent due in two thousand thirty five [Member}	Dec. 31, 2012 Debentures five point nine three five percent due in two thousand thirty two [Member]	Oct. 31, 2012 Debentures five point nine three five percent due in two thousand thirty two [Member]	Jun. 30, 2012 Debentures five point nine three five percent due in two thousand thirty two [Member]	Jun. 30, 2011 Debentures five point nine three five percent due in two thousand thirty two [Member]	Oct. 31, 2012 Debentures four point zero one six percent due in two thousand forty three [Member]	Dec. 31, 2012 Debentures four point zero one six percent due in two thousand forty three [Member]	Dec. 31, 2012 Debentures four point five three five percent due in two thousand forty two [Member]	Jun. 30, 2012 Debentures four point five three five percent due in two thousand forty two [Member]	Sep. 26, 2011 Debentures four point five three five percent due in two thousand forty two [Member]	Dec. 31, 2012 Debentures eight point three seven five percent due in two thousand seventeen [ Member]	Jun. 30, 2012 Debentures eight point three seven five percent due in two thousand seventeen [ Member]	Jun. 30, 2011 Debentures eight point three seven five percent due in two thousand seventeen [ Member]	Dec. 31, 2012 Debentures seven point one two five percent due in two thousand thirteen [Member]	Jun. 30, 2012 Debentures seven point one two five percent due in two thousand thirteen [Member]	Jun. 30, 2011 Debentures seven point one two five percent due in two thousand thirteen [Member]	Dec. 31, 2012 Debentures seven point five percent due in two thousand twenty seven [Member]	Oct. 31, 2012 Debentures seven point five percent due in two thousand twenty seven [Member]	Jun. 30, 2012 Debentures seven point five percent due in two thousand twenty seven [Member]	Sep. 26, 2011 Debentures seven point five percent due in two thousand twenty seven [Member]	Jun. 30, 2011 Debentures seven point five percent due in two thousand twenty seven [Member]	Dec. 31, 2012 Debentures seven percent due in two thousand thirty one [Member]	Oct. 31, 2012 Debentures seven percent due in two thousand thirty one [Member]	Jun. 30, 2012 Debentures seven percent due in two thousand thirty one [Member]	Sep. 26, 2011 Debentures seven percent due in two thousand thirty one [Member]	Jun. 30, 2011 Debentures seven percent due in two thousand thirty one [Member]	Dec. 31, 2012 Debentures six point six two five percent due in two thousand twenty nine [Member]	Oct. 31, 2012 Debentures six point six two five percent due in two thousand twenty nine [Member]	Jun. 30, 2012 Debentures six point six two five percent due in two thousand twenty nine [Member]	Sep. 26, 2011 Debentures six point six two five percent due in two thousand twenty nine [Member]	Jun. 30, 2011 Debentures six point six two five percent due in two thousand twenty nine [Member]	Dec. 31, 2012 Debentures six point four five percent due in two thousand thirty eight [Member]	Oct. 31, 2012 Debentures six point four five percent due in two thousand thirty eight [Member]	Jun. 30, 2012 Debentures six point four five percent due in two thousand thirty eight [Member]	Sep. 26, 2011 Debentures six point four five percent due in two thousand thirty eight [Member]	Jun. 30, 2011 Debentures six point four five percent due in two thousand thirty eight [Member]	Dec. 31, 2012 Debentures six point nine five due in two thousand ninety seven [Member]	Oct. 31, 2012 Debentures six point nine five due in two thousand ninety seven [Member]	Jun. 30, 2012 Debentures six point nine five due in two thousand ninety seven [Member]	Sep. 26, 2011 Debentures six point nine five due in two thousand ninety seven [Member]	Jun. 30, 2011 Debentures six point nine five due in two thousand ninety seven [Member]	Dec. 31, 2012 Debentures six point seven five percent due in two thousand twenty seven [Member]	Oct. 31, 2012 Debentures six point seven five percent due in two thousand twenty seven [Member]	Jun. 30, 2012 Debentures six point seven five percent due in two thousand twenty seven [Member]	Sep. 26, 2011 Debentures six point seven five percent due in two thousand twenty seven [Member]	Jun. 30, 2011 Debentures six point seven five percent due in two thousand twenty seven [Member]	Dec. 31, 2012 Floating rate notes due in two thousand twelve [Member]	Jun. 30, 2012 Floating rate notes due in two thousand twelve [Member]	Jun. 30, 2011 Floating rate notes due in two thousand twelve [Member]	Dec. 31, 2012 Debentures eight point one two five percent due in two thousand twelve [Member]	Jun. 30, 2011 Debentures eight point one two five percent due in two thousand twelve [Member]	Dec. 31, 2012 Other [Member]	Jun. 30, 2012 Other [Member]	Jun. 30, 2011 Other [Member]
Debt Instruments [Line Items]
Total long-term debt including current maturities	$ 6,724,000,000	$ 8,212,000,000		$ 8,444,000,000			$ 1,095,000,000	$ 1,071,000,000	$ 1,026,000,000		$ 754,000,000	$ 755,000,000	$ 756,000,000		$ 700,000,000	$ 700,000,000	$ 700,000,000		$ 600,000,000		$ 1,007,000,000	$ 1,008,000,000		$ 588,000,000	$ 588,000,000	$ 587,000,000	$ 416,000,000		$ 495,000,000	$ 495,000,000		$ 374,000,000	$ 371,000,000	$ 370,000,000		$ 293,000,000	$ 293,000,000	$ 292,000,000	$ 243,000,000	$ 243,000,000	$ 243,000,000	$ 186,000,000		$ 221,000,000		$ 281,000,000	$ 184,000,000		$ 193,000,000		$ 244,000,000	$ 182,000,000		$ 196,000,000		$ 296,000,000	$ 153,000,000		$ 157,000,000		$ 215,000,000	$ 170,000,000		$ 173,000,000		$ 246,000,000	$ 122,000,000		$ 139,000,000		$ 197,000,000		$ 1,399,000,000	$ 1,500,000,000		$ 103,000,000	$ 293,000,000	$ 212,000,000	$ 255,000,000
Current maturities	(268,000,000)	(1,677,000,000)		(178,000,000)
Total long-term debt	6,456,000,000	6,535,000,000		8,266,000,000
Debt instrument face amount			$ 1,750,000,000		$ 1,750,000,000		$ 1,150,000,000				$ 750,000,000				$ 700,000,000				$ 596,000,000		$ 1,000,000,000			$ 600,000,000			$ 420,000,000		$ 500,000,000		$ 570,000,000	$ 570,000,000	$ 528,000,000		$ 528,000,000	$ 295,000,000			$ 243,000,000			$ 187,000,000		$ 222,000,000		$ 282,000,000	$ 185,000,000		$ 194,000,000		$ 246,000,000	$ 182,000,000		$ 197,000,000		$ 298,000,000	$ 154,000,000		$ 158,000,000		$ 215,000,000	$ 172,000,000		$ 176,000,000		$ 250,000,000	$ 124,000,000		$ 141,000,000		$ 200,000,000	$ 1,400,000,000		$ 1,500,000,000	$ 103,000,000
Interest rate stated percentage			4.70%			0.875%	0.875%				4.479%			4.479%	5.45%				5.765%	5.765%			5.765%	5.375%			5.935%	5.935%			4.016%	4.016%	4.535%		4.535%	8.375%			7.125%			7.50%	7.50%		7.50%		7.00%	7.00%		7.00%		6.625%	6.625%		6.625%		6.45%	6.45%		6.45%		6.95%	6.95%		6.95%		6.75%	6.75%		6.75%					8.125%
Debt instrument, maturity year						2014	2014			2021	2021				2018			2041	2041					2035			2032				2043	2043	2042			2017			2013			2027					2031					2029					2038					2097					2027					2012			2012