Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
OPERATING ACTIVITIES:
Net income (loss)	$ 353	$ 277
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization	1,293	1,261
Provision (benefit) for deferred income taxes	(86)	1
Impairment of equity-method investments	112	461
Impairment of and net (gain) loss on sale of assets and businesses	438	34
Amortization of stock-based awards	17	22
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable	175	206
Inventories	(2)	76
Other current assets and deferred charges	(9)	(11)
Accounts payable	(32)	(130)
Accrued liabilities	194	(35)
Affiliate accounts receivable and payable – net	(84)	(9)
Other, including changes in noncurrent assets and liabilities	(28)	(55)
Net cash provided (used) by operating activities	2,341	2,098
FINANCING ACTIVITIES:
Proceeds from (payments of) commercial paper – net	(499)	727
Proceeds from long-term debt	3,663	5,450
Payments of long-term debt	(3,121)	(4,133)
Proceeds from sales of common units	250	0
Contributions from general partner	14	11
Distributions to limited partners and general partner	(1,956)	(2,173)
Distributions to noncontrolling interests	(69)	(59)
Contributions from noncontrolling interests	27	85
Contributions from The Williams Companies, Inc. – net	0	20
Payments for debt issuance costs	(8)	(30)
Special distribution from Gulfstream	0	396
Contribution to Gulfstream for repayment of debt	(148)	0
Other – net	(2)	(4)
Net cash provided (used) by financing activities	(1,849)	290
INVESTING ACTIVITIES:
Capital expenditures (1)	(1,472)	(2,142)
Net proceeds from dispositions	5	3
Proceeds from sale of businesses, net of cash divested	510	0
Purchases of businesses, net of cash acquired	0	(112)
Purchases of and contributions to equity-method investments	(132)	(528)
Distributions from unconsolidated affiliates in excess of cumulative earnings	341	251
Other – net	228	79
Net cash provided (used) by investing activities	(520)	(2,449)
Increase (decrease) in cash and cash equivalents	(28)	(61)
Cash and cash equivalents at beginning of year	96	171
Cash and cash equivalents at end of period	68	110
(1) Increases to property, plant, and equipment	(1,429)	(2,049)
Changes in related accounts payable and accrued liabilities	(43)	(93)
Capital expenditures	$ (1,472)	$ (2,142)