Derivative Instruments and Hedging Activities - Part 1 (Details) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended		3 Months Ended												3 Months Ended														3 Months Ended
	Sep. 30, 2011 Interest Rate Derivatives Libor USD [Member]	Sep. 30, 2012 Interest Rate Derivatives Libor USD [Member]	Sep. 30, 2011 Interest Rate Derivatives Euribor EUR [Member]	Sep. 30, 2012 Interest Rate Derivatives Euribor EUR [Member]	Sep. 30, 2011 Interest Rate Derivatives Libor GBP [Member]	Sep. 30, 2012 Interest Rate Derivatives Libor GBP [Member]	Sep. 30, 2012 Interest Rate Derivatives Current [Member] Libor USD [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Current [Member] Euribor EUR [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Current [Member] Euribor EUR [Member] EUR (€)	Sep. 30, 2012 Interest Rate Derivatives Current [Member] Libor GBP [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Current [Member] Libor GBP [Member] GBP (£)	Sep. 30, 2012 Interest Rate Derivatives Maximum Libor USD [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Maximum Euribor EUR [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Maximum Euribor EUR [Member] EUR (€)	Sep. 30, 2012 Interest Rate Derivatives Maximum Libor GBP [Member] USD ($)	Sep. 30, 2012 Interest Rate Derivatives Maximum Libor GBP [Member] GBP (£)	Sep. 30, 2012 Cross Currency Swaps Chilean Unidad De Fomento CLF [Member] USD ($)	Sep. 30, 2012 Cross Currency Swaps Chilean Unidad De Fomento CLF [Member] CLF	Sep. 30, 2012 Foreign Currency Options Euro EUR [Member] USD ($)	Sep. 30, 2012 Foreign Currency Options Euro EUR [Member] EUR (€)	Sep. 30, 2012 Foreign Currency Options Brazilian Real BRL [Member] USD ($)	Sep. 30, 2012 Foreign Currency Options Brazilian Real BRL [Member] BRL	Sep. 30, 2012 Foreign Currency Options Philippine Peso PHP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Options Philippine Peso PHP [Member] PHP	Sep. 30, 2012 Foreign Currency Options British Pound GBP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Options British Pound GBP [Member] GBP (£)	Sep. 30, 2012 Foreign Currency Forwards Euro EUR [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards Euro EUR [Member] EUR (€)	Sep. 30, 2012 Foreign Currency Forwards Philippine Peso PHP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards Philippine Peso PHP [Member] PHP	Sep. 30, 2012 Foreign Currency Forwards British Pound GBP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards British Pound GBP [Member] GBP (£)	Sep. 30, 2012 Foreign Currency Forwards Chilean Peso CLP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards Chilean Peso CLP [Member] CLP	Sep. 30, 2012 Foreign Currency Forwards Colombian Peso COP [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards Colombian Peso COP [Member] COP	Sep. 30, 2012 Foreign Currency Forwards Argentine Peso ARS [Member] USD ($)	Sep. 30, 2012 Foreign Currency Forwards Argentine Peso ARS [Member] ARS	Sep. 30, 2012 Embedded Foreign Currency Derivatives Euro EUR [Member] USD ($)	Sep. 30, 2012 Embedded Foreign Currency Derivatives Euro EUR [Member] EUR (€)	Sep. 30, 2012 Embedded Foreign Currency Derivatives Philippine Peso PHP [Member] USD ($)	Sep. 30, 2012 Embedded Foreign Currency Derivatives Philippine Peso PHP [Member] PHP	Sep. 30, 2012 Embedded Foreign Currency Derivatives Argentine Peso ARS [Member] USD ($)	Sep. 30, 2012 Embedded Foreign Currency Derivatives Argentine Peso ARS [Member] ARS	Sep. 30, 2012 Embedded Foreign Currency Derivatives Kazakhstani Tenge KZT [Member] USD ($)	Sep. 30, 2012 Embedded Foreign Currency Derivatives Kazakhstani Tenge KZT [Member] KZT	Sep. 30, 2012 Commodity Derivatives Natural Gas MMBTU [Member] MMBTU	Sep. 30, 2012 Commodity Derivatives Petcoke Metric Tons [Member] t	Sep. 30, 2012 Commodity Derivatives Aluminum M Wh [Member] MWh	Sep. 30, 2012 Commodity Derivatives Heating Oil Gallons [Member] gal	Sep. 30, 2012 Commodity Derivatives Coal Metric Tons [Member] t	Sep. 30, 2012 Commodity Derivatives Power MWh [Member] MWh
Derivative Tables [Line Items]
Notional Amount Of Interest Rate Derivatives							$ 3,614	$ 806	€ 627	$ 94	£ 58	$ 4,561	$ 806	€ 627	$ 113	£ 70
Weighted Average Remaining Term	10 years		10 years		16 years												13 years	13 years									1 year	1 year									1 year	1 year	8 years	8 years	11 years	11 years	12 years	12 years	4 years	4 years	11 years	12 years	7 years	1 year	1 year	2 years
Weighted Average Remaining Term (string type)																			<1	<1	<1	<1	<1	<1	<1	<1					<1	<1	<1	<1	<1	<1
% of Debt Currently Hedged by Index		70.00%		66.00%		88.00%											85.00%	85.00%
Notional Amount Of Foreign Currency Derivatives																	266		87	68	46	94	28	1,174	28	18	161	115	0	0	17	11	176	86,476	94	172,643	14	76	3	2	1,486	62,040	183	857	8	1,266
Notional (CLF)																		6
Probability Adjusted Notional																			$ 38		$ 26		$ 6		$ 6
Notional																																															29,000,000	12,000,000	14,000,000	2,000,000	1,000,000	4,000,000