Debt And Financing Arrangements (Narrative) (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended		12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			12 Months Ended			1 Months Ended		3 Months Ended		1 Months Ended	12 Months Ended						12 Months Ended		1 Months Ended	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Sep. 26, 2011	Sep. 30, 2011 4.535% Debentures $528 Million Face Amount, Due In 2042 [Member]	Jun. 30, 2012 4.535% Debentures $528 Million Face Amount, Due In 2042 [Member]	Sep. 26, 2011 4.535% Debentures $528 Million Face Amount, Due In 2042 [Member]	Jun. 30, 2012 6.45% Debentures $158 Million Face Amount, Due In 2038 [Member]	Sep. 26, 2011 6.45% Debentures $158 Million Face Amount, Due In 2038 [Member]	Jun. 30, 2011 6.45% Debentures $158 Million Face Amount, Due In 2038 [Member]	Jun. 30, 2012 6.625% Debentures $197 Million Face Amount, Due In 2029 [Member]	Sep. 26, 2011 6.625% Debentures $197 Million Face Amount, Due In 2029 [Member]	Jun. 30, 2011 6.625% Debentures $197 Million Face Amount, Due In 2029 [Member]	Jun. 30, 2012 6.75% Debentures $141 Million Face Amount, Due In 2027 [Member]	Sep. 26, 2011 6.75% Debentures $141 Million Face Amount, Due In 2027 [Member]	Jun. 30, 2011 6.75% Debentures $141 Million Face Amount, Due In 2027 [Member]	Jun. 30, 2012 6.95% Debentures $176 Million Face Amount, Due In 2097 [Member]	Sep. 26, 2011 6.95% Debentures $176 Million Face Amount, Due In 2097 [Member]	Jun. 30, 2011 6.95% Debentures $176 Million Face Amount, Due In 2097 [Member]	Jun. 30, 2012 7.0% Debentures $194 Million Face Amount, Due In 2031 [Member]	Sep. 26, 2011 7.0% Debentures $194 Million Face Amount, Due In 2031 [Member]	Jun. 30, 2011 7.0% Debentures $194 Million Face Amount, Due In 2031 [Member]	Jun. 30, 2012 7.5% Debentures $222 Million Face Amount, Due In 2027 [Member]	Sep. 26, 2011 7.5% Debentures $222 Million Face Amount, Due In 2027 [Member]	Jun. 30, 2011 7.5% Debentures $222 Million Face Amount, Due In 2027 [Member]	Mar. 31, 2011 4.70% Debentures $1.75 billion face amount, due in 2041	Jun. 30, 2008 4.70% Debentures $1.75 billion face amount, due in 2041	Mar. 31, 2011 4.70% Debentures $1.75 billion face amount, due in 2041	Mar. 30, 2011 4.70% Debentures $1.75 billion face amount, due in 2041	Feb. 28, 2007 0.875% Convertible Senior Notes $1.15 Billion Face Amount, Due In 2014 [Member]	Jun. 30, 2012 0.875% Convertible Senior Notes $1.15 Billion Face Amount, Due In 2014 [Member]	Jun. 30, 2011 0.875% Convertible Senior Notes $1.15 Billion Face Amount, Due In 2014 [Member]	Jun. 30, 2010 0.875% Convertible Senior Notes $1.15 Billion Face Amount, Due In 2014 [Member]	Jun. 30, 2007 0.875% Convertible Senior Notes $1.15 Billion Face Amount, Due In 2014 [Member]	Jun. 30, 2012 4.479% Debentures $750 Million Face Amount, Due In 2021 [Member]	Mar. 30, 2011 4.479% Debentures $750 Million Face Amount, Due In 2021 [Member]	Jun. 30, 2012 5.765% Debentures $1.0 Billion Face Amount, Due In 2041 [Member]	Mar. 30, 2011 5.765% Debentures $1.0 Billion Face Amount, Due In 2041 [Member]	Feb. 28, 2011 Floating Rate Notes $1.4 Billion Face Amount, Due In 2012 [Member]	Jun. 30, 2012 Floating Rate Notes $1.4 Billion Face Amount, Due In 2012 [Member]	Jun. 30, 2011 Floating Rate Notes $1.4 Billion Face Amount, Due In 2012 [Member]	Feb. 11, 2011 Floating Rate Notes $1.4 Billion Face Amount, Due In 2012 [Member]	Jun. 30, 2012 Lines of credit [Member]	Jun. 30, 2011 Lines of credit [Member]	Aug. 31, 2012 Commercial Paper [Member]	Jun. 30, 2012 Commercial Paper [Member]
Debt And Financing Arrangements [Line Items]
Proceeds from long-term debt borrowings			$ 97,000,000	$ 1,564,000,000	$ 27,000,000		$ 528,000,000																						$ 1,750,000,000			$ 1,150,000,000									$ 1,500,000,000
Remarketed debt face amount underlying the units																															1,750,000,000							750,000,000		1,000,000,000
Stated interest rate for debt remarketed into two tranches (as a percent)																															4.70%
Number of tranches debt was remarketed into																												2
Debt instrument face amount	1,750,000,000	1,750,000,000		1,750,000,000				528,000,000		158,000,000		215,000,000	197,000,000		298,000,000	141,000,000		200,000,000	176,000,000		250,000,000	194,000,000		246,000,000	222,000,000		282,000,000						1,150,000,000				750,000,000		1,000,000,000			1,400,000,000	1,500,000,000
Interest rate stated percentage	4.70%	4.70%		4.70%				4.535%	4.535%	6.45%	6.45%		6.625%	6.625%		6.75%	6.75%		6.95%	6.95%		7.00%	7.00%		7.50%	7.50%						0.875%	0.875%				4.479%	4.479%	5.765%	5.765%		0.63%
Debt instrument, maturity year								2042		2038			2029			2027			2097			2031			2027							2014	2014				2021		2041			2012
Debt face amount exchanged for new debentures						404,000,000
Debt premium			44,000,000	21,000,000	71,000,000			32,000,000
Charges from early extinguishment of debt		15,000,000	12,000,000	15,000,000	75,000,000																									8,000,000
Shares issued related to equity unit conversion (in shares)	44
Cash received for shares issued related to equity unit conversion	1,750,000,000			1,750,000,000
Debt instrument, maturity date																																	Jan. 15, 2014								Aug. 13, 2012
Debt Instrument, floating interest rate																																									three-month LIBOR
Debt instrument, basis spread on floating interest rate																																												0.16%
Convertible debt initial conversion ratio																																	22.8423
Principal amount of debt used for conversion ratio																																	1,000
Convertible debt conversion price (in dollars per share)																																	$ 43.78
Minimum number of days within a specified consecutive trading day period in which the closing price of the entity's common stock must exceed the conversion price by a specified percentage rate for the notes to be redeemable (in days)																																	20 days
Number of consecutive trading days during which the closing price of the entity's common stock must exceed the conversion price by a specified rate for a minimum amount of days in order for the notes to be redeemable (in days)																																	30 days
Percentage of the closing sales price of the entity's common stock that the conversion price must exceed in order for the notes to be convertible (as a percent)																																	140.00%
Maximum amount of cash that holder would receive upon conversion																																	1,000
Number of consecutive business days immediately after any specified consecutive trading day period																																	5 days
Number of consecutive trading days immediately prior to specified number of consecutive business days																																	5 days
Maximum percentage rate of the average product of the closing price of the Company's common stock and the average conversion rate of the debt instrument that the average trading price must be equal to or less than in order for the debt instruments to be convertible.																																	98.00%
Percentage of principal amount plus accrued and unpaid interest at which holders may require the entity to repurchase the debt instrument																																	100.00%
Proceeds from notes recorded as long-term debt																																				853,000,000
Proceeds from notes recorded as equity																																				297,000,000
Discount amortization expense included in interest expense related to the notes																																	45,000,000	43,000,000	40,000,000
Purchased call options with issuance of notes																																				300,000,000
Sale of warrants (in shares)																																				26.3
Exercise price of warrants (in dollars per share)																																				$ 62.56
Conversion price of warrants (in dollars per share)																																				$ 62.56
Proceeds from sale of warrants																																				170,000,000
Net cost of purchased call options and warrants																																				130,000,000
Excess of fair value over carrying value of long-term debt			1,500,000,000
Maturities of long-term debt due 2012			1,700,000,000
Maturities of long-term debt due 2013			1,100,000,000
Maturities of long-term debt due 2014			21,000,000
Maturities of long-term debt due 2015			17,000,000
Maturities of long-term debt due 2016			304,000,000
Carrying amount of property plant and equipment pledged as collateral			324,000,000
Lines of credit																																													6,500,000,000			4,300,000,000
Unused lines of credit																																													4,400,000,000
Weighted average interest rate on short term borrowings (as a percent)																																													0.78%	0.65%
Borrowing under commercial paper borrowing facility																																																1,300,000,000
Increase in commercial paper borrowing capacity																																															2,000,000,000
Outstanding standby letters of credit and surety bonds	729,000,000	729,000,000	644,000,000	729,000,000
Maximum amount provided under accounts receivable securitization facility excluded in lines of credit			1,000,000,000
Amount utilized from the securitization facility			$ 1,000,000,000