Fair Value Measurement (Unaudited) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Money market funds [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] U.S. core fixed income funds [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government mortgage-backed securities [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Corporate bonds [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Government bonds and notes [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Asset-backed securities [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Municipal bonds [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Equity securities [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Embedded derivatives in provisional sales/purchases contracts [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper futures and swap contracts [Member] Fair Value, Inputs, Level 3 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Carrying Amount, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Estimate of Fair Value, Fair Value Disclosure [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 1 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 2 [Member]		Mar. 31, 2012 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2011 Fair Value, Measurements, Recurring [Member] Copper forward contracts [Member] Fair Value, Inputs, Level 3 [Member]
Cash equivalents:
Cash equivalents																																																														$ 4,221	[1]	$ 4,007	[1]	$ 4,221	[1]	$ 4,007	[1]	$ 4,221	[1]	$ 4,007	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]
McMoRan Exploration Co. investment		468	[2]	475	[2]	379	[2]	507	[2]	0	[2]	0	[2]	379	[2]	507	[2]	0	[2]	0	[2]
Trust assets (current and long-term):
Trust assets		150	[1],[3]	152	[1],[3]	150	[1],[3]	152	[1],[3]	8	[1],[3]	9	[1],[3]	142	[1],[3]	143	[1],[3]	0	[1],[3]	0	[1],[3]																																									8	[1],[3]	9	[1],[3]	8	[1],[3]	9	[1],[3]	8	[1],[3]	9	[1],[3]	0	[1],[3]	0	[1],[3]	0	[1],[3]	0	[1],[3]	47	[1],[3]	46	[1],[3]	47	[1],[3]	46	[1],[3]	0	[1],[3]	0	[1],[3]	47	[1],[3]	46	[1],[3]	0	[1],[3]	0	[1],[3]	39	[1],[3]	47	[1],[3]	39	[1],[3]	47	[1],[3]	0	[1],[3]	0	[1],[3]	39	[1],[3]	47	[1],[3]	0	[1],[3]	0	[1],[3]	24	[1],[3]	19	[1],[3]	24	[1],[3]	19	[1],[3]	0	[1],[3]	0	[1],[3]	24	[1],[3]	19	[1],[3]	0	[1],[3]	0	[1],[3]	21	[1],[3]	21	[1],[3]	21	[1],[3]	21	[1],[3]	0	[1],[3]	0	[1],[3]	21	[1],[3]	21	[1],[3]	0	[1],[3]	0	[1],[3]	10	[1],[3]	9	[1],[3]	10	[1],[3]	9	[1],[3]	0	[1],[3]	0	[1],[3]	10	[1],[3]	9	[1],[3]	0	[1],[3]	0	[1],[3]	1	[1],[3]	1	[1],[3]	1	[1],[3]	1	[1],[3]	0	[1],[3]	0	[1],[3]	1	[1],[3]	1	[1],[3]	0	[1],[3]	0	[1],[3]
Available-for-sale securities:
Available-for-sale securities				11	[1],[3]			11	[1],[3]			11	[1],[3]			0	[1],[3]			0	[1],[3]																																											2	[1],[3]			2	[1],[3]			2	[1],[3]			0	[1],[3]			0	[1],[3]																																																																																																																									8	[1],[3],[4]	9	[1],[3]	8	[1],[3],[4]	9	[1],[3]	8	[1],[3],[4]	9	[1],[3]	0	[1],[3],[4]	0	[1],[3]	0	[1],[3],[4]	0	[1],[3]
Derivatives (Assets):
Derivative assets		57	[1]	77	[1]	57	[1]	77	[1]	9	[1]	4	[1]	48	[1]	73	[1]	0	[1]	0	[1]																																																																																																																																																																																																									46	[1],[5]	72	[1],[5]	46	[1],[5]	72	[1],[5]	0	[1],[5]	0	[1],[5]	46	[1],[5]	72	[1],[5]	0	[1],[5]	0	[1],[5]	10	[1],[6]	3	[1],[6]	10	[1],[6]	3	[1],[6]	9	[1],[6]	3	[1],[6]	1	[1],[6]	0	[1],[6]	0	[1],[6]	0	[1],[6]	1	[1],[6]	2	[1],[6]	1	[1],[6]	2	[1],[6]	0	[1],[6]	1	[1],[6]	1	[1],[6]	1	[1],[6]	0	[1],[6]	0	[1],[6]
Total assets						4,815		4,754		4,246		4,031		569		723		0		0
Derivatives (Liabilities):
Derivative liabilities		(32)	[1]	(95)	[1]	(32)	[1]	(95)	[1]	(2)	[1]	(11)	[1]	(30)	[1]	(84)	[1]	0	[1]	0	[1]	(29)	[1],[5]	(82)	[1],[5]	(29)	[1],[5]	(82)	[1],[5]	0	[1],[5]	0	[1],[5]	(29)	[1],[5]	(82)	[1],[5]	0	[1],[5]	0	[1],[5]	(3)	[1],[7]	(13)	[1],[7]	(3)	[1],[7]	(13)	[1],[7]	(2)	[1],[7]	(11)	[1],[7]	(1)	[1],[7]	(2)	[1],[7]	0	[1],[7]	0	[1],[7]
Long-term debt, including current portion		(3,521)	[8]	(3,537)	[8]	(3,502)	[8]	(3,797)	[8]	0	[8]	0	[8]	(3,502)	[8]	(3,797)	[8]	0	[8]	0	[8]
Total liabilities						(3,534)		(3,892)		(2)		(11)		(3,532)		(3,881)		0		0
Time Deposits, at Carrying Value	$ 17
Dividend Rate Of Investee Preferred Stock	5.75%

[1] Recorded at fair value.

[2] Recorded at cost and included in other assets.

[3] Current portion included in other current assets and long-term portion included in other assets.

[4] Excluded were$17 million of time deposits at March 31, 2012.

[5] Embedded derivatives are recorded in accounts receivable and/or accounts payable and accrued liabilities.

[6] Included in other current assets.

[7] Included in accounts payable and accrued liabilities.

[8] Recorded at cost.