Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Net income (loss)	$ (1,314)	$ 2,339	$ 668
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization	1,738	1,176	815
Provision (benefit) for deferred income taxes	(337)	1,264	424
Impairment of goodwill	1,098	0	0
Impairment of equity-method investments	1,359	0	0
Impairment of and net (gain) loss on sale of Property, plant, and equipment	215	67	29
Amortization of stock-based awards	82	53	37
Gain on remeasurement of equity-method investment	0	(2,544)	0
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable	39	(276)	35
Inventories	105	(36)	(17)
Other current assets and deferred charges	4	(44)	25
Accounts payable	(90)	(8)	(35)
Accrued liabilities	26	(203)	175
Other, including changes in noncurrent assets and liabilities	(247)	327	61
Net cash provided (used) by operating activities	2,678	2,115	2,217
FINANCING ACTIVITIES:
Proceeds from (payments of) commercial paper – net	(306)	572	224
Proceeds from long-term debt	9,772	7,321	2,699
Payments of long-term debt	(6,516)	(1,828)	(2,081)
Proceeds from issuance of common stock	27	3,416	18
Proceeds from sale of limited partner units of consolidated partnership	59	55	1,819
Dividends paid	(1,836)	(1,412)	(982)
Dividends and distributions paid to noncontrolling interests	(942)	(840)	(489)
Contributions from noncontrolling interests	111	340	467
Payments for debt issuance costs	(35)	(40)	(15)
Special distribution from Gulfstream	396	0	0
Contribution to Gulfstream for repayment of debt	(248)	0	0
Other – net	(1)	17	17
Net cash provided (used) by financing activities	481	7,601	1,677
INVESTING ACTIVITIES:
Capital expenditures (1)	(3,167)	(4,031)	(3,572)
Net proceeds from dispositions	3	34	3
Purchases of businesses, net of cash acquired	(112)	(5,958)	(6)
Purchases of and contributions to equity-method investments	(595)	(482)	(455)
Other – net	572	280	(22)
Net cash provided (used) by investing activities	(3,299)	(10,157)	(4,052)
Increase (decrease) in cash and cash equivalents	(140)	(441)	(158)
Cash and cash equivalents at beginning of year	240	681	839
Cash and cash equivalents at end of year	100	240	681
(1) Increases to property, plant, and equipment	(3,024)	(3,916)	(3,653)
Changes in related accounts payable and accrued liabilities	(143)	(115)	81
Capital expenditures (1)	$ (3,167)	$ (4,031)	$ (3,572)