Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES:
Net income (loss)	$ 681	$ 76
Adjustments to reconcile to net cash provided by operating activities:
Depreciation, depletion and amortization	784	727
Provision (benefit) for deferred income taxes	87	50
Provision for loss on investments, property and other assets	51	10
Amortization of stock-based awards	25	26
Early debt retirement costs		606
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable	(56)	115
Inventories	20	(57)
Margin deposits and customer margin deposits payable	(30)	5
Other current assets and deferred charges	(9)	(6)
Accounts payable	109	(89)
Accrued liabilities	30	(157)
Changes in current and noncurrent derivative assets and liabilities	14	(34)
Other, including changes in noncurrent assets and liabilities	(22)	25
Net cash provided by operating activities	1,684	1,297
FINANCING ACTIVITIES:
Proceeds from long-term debt	425	3,749
Payments of long-term debt	(225)	(3,515)
Dividends paid	(191)	(137)
Dividends and distributions paid to noncontrolling interests	(105)	(66)
Payments for debt issuance costs	(19)	(66)
Premiums paid on early debt retirements		(574)
Other - net	1	(21)
Net cash used by financing activities	(114)	(630)
INVESTING ACTIVITIES:
Capital expenditures	(1,094)	(940)
Purchases of investments/advances to affiliates	(132)	(20)
Other - net	27	27
Net cash used by investing activities	(1,199)	(933)
Increase (decrease) in cash and cash equivalents	371	(266)
Cash and cash equivalents at beginning of period	795	1,867
Cash and cash equivalents at end of period	1,166	1,601
Increases to property, plant and equipment	(1,086)	(898)
Changes in related accounts payable and accrued liabilities	(8)	(42)
Capital expenditures	$ (1,094)	$ (940)