Risk Management Activities and Fair Value Measurements - Gains (Losses) on Derivative Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended				12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2013		Mar. 31, 2012		Jun. 30, 2012
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)					$ 34				$ 33
Amount of Gain (Loss) Reclassified from AOCI into Income	84	[1]	64	[1]	175	[1]	41	[1]
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)					8				11
Amount of Gain (Loss) Reclassified from AOCI into Income	2	[1]	2	[1]	5	[1]	5	[1]
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)					26				22
Amount of Gain (Loss) Reclassified from AOCI into Income	82	[1]	60	[1]	170	[1]	33	[1]
Cash Flow Hedging [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Reclassified from AOCI into Income	0	[1]	2	[1]	0	[1]	3	[1]
Fair Value Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	0	[2]	(2)	[2]	4	[2]	(4)	[2]
Fair Value Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(64)	[2]	(19)	[2]	(39)	[2]	93	[2]
Fair Value Hedging [Member] | Debt [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	64	[2]	17	[2]	43	[2]	(97)	[2]
Net Investment Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)					156				6
Amount of Gain (Loss) Recognized in Income	0	[2]	9	[2]	(1)	[2]	1	[2]
Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(209)	[3]	170	[3]	17	[3]	(822)	[3]
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(209)	[3],[4]	168	[3],[4]	17	[3],[4]	(823)	[3],[4]
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	$ 0	[3]	$ 2	[3]	$ 0	[3]	$ 1	[3]

[1] The gain or loss on the effective portion of cash flow hedging relationships is reclassified from accumulated OCI into net income in the same period during which the related item affects earnings. Such amounts are included in the Consolidated Statements of Earnings as follows: interest rate contracts in interest expense, foreign currency contracts in selling, general and administrative expense and interest expense and commodity contracts in cost of products sold.

[2] The gain or loss on the ineffective portion of interest rate contracts and net investment hedges, if any, is included in the Consolidated Statements of Earnings in interest expense.

[3] The gain or loss on contracts not designated as hedging instruments is included in the Consolidated Statements of Earnings as follows: foreign currency contracts in selling, general and administrative expense and commodity contracts in cost of products sold.

[4] The gain or loss on non-qualifying foreign currency contracts substantially offsets the foreign currency mark-to-market impact of the related exposure.