10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

þ	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the quarterly period ended March 31, 2013
or
¨	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the transition period from                      to

Commission file number 1-4174

THE WILLIAMS COMPANIES, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	73-0569878
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

ONE WILLIAMS CENTER, TULSA, OKLAHOMA	74172
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (918) 573-2000

NO CHANGE

(Former name, former address and former fiscal year, if changed since last report.)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). þ Yes ¨ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer þ	Accelerated filer ¨	Non-accelerated filer ¨	Smaller reporting company ¨
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act.) Yes ¨ No þ

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding at May 3, 2013
Common Stock, $1 par value	682,693,321 Shares

The Williams Companies, Inc.

Index

	Page
Part I. Financial Information
Item 1. Financial Statements
Consolidated Statement of Income – Three Months Ended March 31, 2013 and 2012		4
Consolidated Statement of Comprehensive Income – Three Months Ended March 31, 2013 and 2012		5
Consolidated Balance Sheet – March 31, 2013 and December 31, 2012		6
Consolidated Statement of Changes in Equity – Three Months Ended March 31, 2013		7
Consolidated Statement of Cash Flows – Three Months Ended March 31, 2013 and 2012		8
Notes to Consolidated Financial Statements		9
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		24
Item 3. Quantitative and Qualitative Disclosures About Market Risk		43
Item 4. Controls and Procedures		44
Part II. Other Information		45
Item 1. Legal Proceedings		45
Item 6. Exhibits		46

Certain matters contained in this report include “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements relate to anticipated financial performance, management’s plans and objectives for future operations, business prospects, outcome of regulatory proceedings, market conditions, and other matters. We make these forward-looking statements in reliance on the safe harbor protections provided under the Private Securities Litigation Reform Act of 1995.

All statements, other than statements of historical facts, included in this report that address activities, events or developments that we expect, believe or anticipate will exist or may occur in the future, are forward-looking statements. Forward-looking statements can be identified by various forms of words such as “anticipates,” “believes,” “seeks,” “could,” “may,” “should,” “continues,” “estimates,” “expects,” “forecasts,” “intends,” “might,” “goals,” “objectives,” “targets,” “planned,” “potential,” “projects,” “scheduled,” “will,” “assumes,” “guidance,” “outlook,” “in service date” or other similar expressions. These forward-looking statements are based on management’s beliefs and assumptions and on information currently available to management and include, among others, statements regarding:

• Amounts and nature of future capital expenditures;

• Expansion and growth of our business and operations;

• Financial condition and liquidity;

• Business strategy;

• Cash flow from operations or results of operations;

• The levels of dividends to stockholders;

• Seasonality of certain business components;

• Natural gas, natural gas liquids, and olefins prices, supply and demand;

• Demand for our services.

1

Forward-looking statements are based on numerous assumptions, uncertainties and risks that could cause future events or results to be materially different from those stated or implied in this report. Many of the factors that will determine these results are beyond our ability to control or predict. Specific factors that could cause actual results to differ from results contemplated by the forward-looking statements include, among others, the following:

• Whether we have sufficient cash to enable us to pay current and expected levels of dividends;

• Availability of supplies, market demand, and volatility of prices;

• Inflation, interest rates, fluctuation in foreign exchange, and general economic conditions (including future disruptions and volatility in the global credit markets and the impact of these events on our customers and suppliers);

• The strength and financial resources of our competitors and the effects of competition;

• Ability to acquire new businesses and assets and integrate those operations and assets into our existing businesses, as well as successfully expand our facilities;

• Development of alternative energy sources;

• The impact of operational and development hazards and unforeseen interruptions;

• Costs of, changes in, or the results of laws, government regulations (including safety and environmental regulations), environmental liabilities, litigation, and rate proceedings;

• Our costs and funding obligations for defined benefit pension plans and other postretirement benefit plans;

• Changes in maintenance and construction costs;

• Changes in the current geopolitical situation;

• Our exposure to the credit risk of our customers and counterparties;

• Risks related to strategy and financing, including restrictions stemming from our debt agreements, future changes in our credit ratings and the availability and cost of capital;

• The amount of cash distributions from and capital requirements of our investments and joint ventures in which we participate;

• Risks associated with weather conditions and natural phenomena, including climate conditions;

• Acts of terrorism, including cybersecurity threats and related disruptions;

• Additional risks described in our filings with the Securities and Exchange Commission.

Given the uncertainties and risk factors that could cause our actual results to differ materially from those contained in any forward-looking statement, we caution investors not to unduly rely on our forward-looking statements. We disclaim any obligations to and do not intend to update the above list or to announce publicly the result of any revisions to any of the forward-looking statements to reflect future events or developments.

In addition to causing our actual results to differ, the factors listed above and referred to below may cause our intentions to change from those statements of intention set forth in this report. Such changes in our intentions may also cause our results to differ. We may change our intentions, at any time and without notice, based upon changes in such factors, our assumptions, or otherwise.

Because forward-looking statements involve risks and uncertainties, we caution that there are important factors, in addition to those listed above, that may cause actual results to differ materially from those contained in the

2

forward-looking statements. For a detailed discussion of those factors, see Part I, Item 1A. Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 2012.

3

PART I – FINANCIAL INFORMATION

The Williams Companies, Inc.

Consolidated Statement of Income

(Unaudited)

	Three months ended March 31,
(Millions, except per-share amounts)	2013			2012
Revenues:
Service revenues	$	706		$	677
Product sales		1,104			1,342
Total revenues		1,810			2,019
Costs and expenses:
Product costs		790			957
Operating and maintenance expenses		260			230
Depreciation and amortization expenses		210			168
Selling, general, and administrative expenses		132			129
Other (income) expense – net		(8	)		8
Total costs and expenses		1,384			1,492
Operating income (loss)		426			527
Equity earnings (losses)		18			31
Interest incurred		(152	)		(141	)
Interest capitalized		24			10
Other investing income – net		13			69
Other income (expense) – net		(2	)		(4	)
Income (loss) from continuing operations before income taxes		327			492
Provision (benefit) for income taxes		96			133
Income (loss) from continuing operations		231			359
Income (loss) from discontinued operations		(1	)		136
Net income (loss)		230			495
Less: Net income attributable to noncontrolling interests		69			72
Net income (loss) attributable to The Williams Companies, Inc.	$	161		$	423
Amounts attributable to The Williams Companies, Inc.:
Income (loss) from continuing operations	$	162		$	287
Income (loss) from discontinued operations		(1	)		136
Net income (loss)	$	161		$	423
Basic earnings (loss) per common share:
Income (loss) from continuing operations	$	.24		$	.48
Income (loss) from discontinued operations		-			.23
Net income (loss)	$	.24		$	.71
Weighted-average shares (thousands)		682,052			593,231
Diluted earnings (loss) per common share:
Income (loss) from continuing operations	$	.23		$	.47
Income (loss) from discontinued operations		-			.23
Net income (loss)	$	.23		$	.70
Weighted-average shares (thousands)		687,143			600,520
Cash dividends declared per common share	$	.33875		$	.25875

See accompanying notes.

4

The Williams Companies, Inc.

Consolidated Statement of Comprehensive Income

(Unaudited)

	Three months ended March 31,
(Millions)	2013			2012
Net income (loss)	$	230		$	495
Other comprehensive income (loss):
Cash flow hedging activities:
Net unrealized gain (loss) from derivative instruments, net of taxes of $2 in 2012		-			(6	)
Reclassifications into earnings of net derivative instruments (gain) loss		-			1
Foreign currency translation adjustments		(21	)		19
Pension and other postretirement benefits:
Amortization of prior service cost (credit) included in net periodic benefit cost		(1	)		-
Amortization of actuarial (gain) loss included in net periodic benefit cost, net of taxes of ($6) in 2013 and ($5) in 2012		10			9
Reclassifications into earnings of (gain) loss on sale of equity securities, net of taxes of $2 in 2012		-			(3	)
Other comprehensive income (loss)		(12	)		20
Comprehensive income (loss)		218			515
Less: Comprehensive income (loss) attributable to noncontrolling interest		69			70
Comprehensive income (loss) attributable to The Williams Companies, Inc.	$	149		$	445

See accompanying notes.

5

The Williams Companies, Inc.

Consolidated Balance Sheet

(Unaudited)

	March 31,			December 31,
(Dollars in millions, except per-share amounts)	2013			2012
ASSETS
Current assets:
Cash and cash equivalents	$	702		$	839
Accounts and notes receivable		760			688
Deferred income tax asset		117			117
Inventories		190			175
Regulatory assets		50			39
Other current assets and deferred charges		45			66
Total current assets		1,864			1,924
Investments		4,039			3,987
Property, plant and equipment, at cost		23,197			22,546
Accumulated depreciation and amortization		(7,202	)		(7,079	)
Property, plant and equipment - net		15,995			15,467
Goodwill		646			649
Other intangibles		1,689			1,704
Regulatory assets, deferred charges, and other		583			596
Total assets	$	24,816		$	24,327
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	935		$	920
Accrued liabilities		624			628
Long-term debt due within one year		1			1
Total current liabilities		1,560			1,549
Long-term debt		10,610			10,735
Deferred income taxes		3,015			2,841
Other noncurrent liabilities		1,761			1,775
Contingent liabilities (Note 12)
Equity:
Stockholders’ equity:
Common stock (960 million shares authorized at $1 par value; 717 million shares issued at March 31, 2013 and 716 million shares issued at December 31, 2012)		717			716
Capital in excess of par value		11,258			11,134
Retained deficit		(5,765	)		(5,695	)
Accumulated other comprehensive income (loss)		(374	)		(362	)
Treasury stock, at cost (35 million shares of common stock)		(1,041	)		(1,041	)
Total stockholders’ equity		4,795			4,752
Noncontrolling interests in consolidated subsidiaries		3,075			2,675
Total equity		7,870			7,427
Total liabilities and equity	$	24,816		$	24,327

See accompanying notes.

6

The Williams Companies, Inc.

Consolidated Statement of Changes in Equity

(Unaudited)

	The Williams Companies, Inc., Stockholders
	Common Stock		Capital in Excess of Par Value		Retained Deficit			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Total Stockholders’ Equity			Noncontrolling Interest			Total
	(Millions)
Balance – December 31, 2012	$	716	$	11,134	$	(5,695	)	$	(362	)	$	(1,041	)	$	4,752		$	2,675		$	7,427
Net income (loss)		-		-		161			-			-			161			69			230
Other comprehensive income (loss)		-		-		-			(12	)		-			(12	)		-			(12	)
Cash dividends – common stock		-		-		(231	)		-			-			(231	)		-			(231	)
Dividends and distributions to noncontrolling interests		-		-		-			-			-			-			(105	)		(105	)
Stock-based compensation and related common stock issuances, net of tax		1		10		-			-			-			11			-			11
Sales of limited partner units of Williams Partners L.P.		-		-		-			-			-			-			617			617
Changes in Williams Partners L.P. ownership interest, net		-		114		-			-			-			114			(182	)		(68	)
Contributions from noncontrolling interests		-		-		-			-			-			-			2			2
Other		-		-		-			-			-			-			(1	)		(1	)
Balance – March 31, 2013	$	717	$	11,258	$	(5,765	)	$	(374	)	$	(1,041	)	$	4,795		$	3,075		$	7,870

See accompanying notes.

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The Williams Companies, Inc.

Consolidated Statement of Cash Flows

(Unaudited)

	Three months ended March 31,
(Millions)	2013			2012
OPERATING ACTIVITIES:
Net income (loss)	$	230		$	495
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization		210			168
Provision (benefit) for deferred income taxes		103			86
Net (gain) loss on dispositions of assets		(2	)		(57	)
Gain on reconsolidation of Wilpro entities (Note 3)		-			(144	)
Amortization of stock-based awards		9			9
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable		(72	)		52
Inventories		(13	)		(17	)
Other current assets and deferred charges		11			35
Accounts payable		6			(68	)
Accrued liabilities		(25	)		(98	)
Other, including changes in noncurrent assets and liabilities		38			(27	)
Net cash provided (used) by operating activities		495			434
FINANCING ACTIVITIES:
Proceeds from long-term debt		770			-
Payments of long-term debt		(895	)		(25	)
Proceeds from issuance of common stock		7			26
Proceeds from sale of limited partner units of consolidated partnership		617			490
Dividends paid		(231	)		(154	)
Dividends and distributions paid to noncontrolling interests		(105	)		(61	)
Distributions paid to noncontrolling interests on sale of Wilpro assets (Note 3)		-			(38	)
Other – net		13			30
Net cash provided (used) by financing activities		176			268
INVESTING ACTIVITIES:
Capital expenditures*		(713	)		(329	)
Purchases of and contributions to equity method investments		(93	)		(48	)
Purchases of businesses		-			(325	)
Proceeds from dispositions of investments		-			78
Cash of Wilpro entities upon reconsolidation (Note 3)		-			121
Other – net		(2	)		12
Net cash provided (used) by investing activities		(808	)		(491	)
Increase (decrease) in cash and cash equivalents		(137	)		211
Cash and cash equivalents at beginning of period		839			889
Cash and cash equivalents at end of period	$	702		$	1,100
*  Increases to property, plant, and equipment	$	(732	)	$	(371	)
Changes in related accounts payable and accrued liabilities		19			42
Capital expenditures	$	(713	)	$	(329	)

See accompanying notes.

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The Williams Companies, Inc.

Notes to Consolidated Financial Statements

(Unaudited)

Note 1. General, Description of Business, and Basis of Presentation

General

Our accompanying interim consolidated financial statements do not include all the notes in our annual financial statements and, therefore, should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2012 in our Annual Report on Form 10-K. The accompanying unaudited financial statements include all normal recurring adjustments and others that, in the opinion of management, are necessary to present fairly our interim financial statements.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Unless the context clearly indicates otherwise, references in this report to “we,” “our,” “us,” or similar language refer to The Williams Companies, Inc. and its subsidiaries.

Description of Business

Our operations are located principally in the United States and are organized into the Williams Partners, Williams NGL & Petchem Services, and Access Midstream Partners reportable segments. All remaining business activities are included in Other.

Williams Partners consists of our consolidated master limited partnership, Williams Partners L.P. (WPZ), and includes gas pipeline and domestic midstream businesses. The gas pipeline businesses primarily consists of two interstate natural gas pipelines, which are Transcontinental Gas Pipe Line Company, LLC (Transco) and Northwest Pipeline GP (Northwest Pipeline), a 50 percent equity investment in Gulfstream Natural Gas System, L.L.C. (Gulfstream), and a 51 percent consolidated interest in Constitution Pipeline Company, LLC (Constitution). WPZ’s midstream operations are composed of significant, large-scale operations in the Rocky Mountain and Gulf Coast regions, operations in the Marcellus Shale region, and various equity investments in domestic natural gas gathering and processing assets and natural gas liquid (NGL) fractionation and transportation assets. WPZ’s midstream assets also include substantial operations and investments in the Four Corners region, the Piceance basin, an NGL fractionator and storage facilities near Conway, Kansas as well as an NGL light-feed olefins cracker in Geismar, Louisiana, along with associated ethane and propane pipelines, and a refinery grade splitter in Louisiana.

Williams NGL & Petchem Services consists primarily of a Canadian oil sands offgas processing plant located near Fort McMurray, Alberta, and an NGL/olefin fractionation facility and butylene/butane splitter facility at Redwater, Alberta.

Access Midstream Partners consists of our equity investment in Access Midstream Partners, L.P. (ACMP). As of March 31, 2013, this investment includes an indirect 50 percent interest in Access Midstream Partners, GP, L.L.C. (Access GP), including incentive distribution rights, and a 24 percent limited partner interest in ACMP. ACMP is a publicly-traded master limited partnership that provides gathering, treating, and compression services to producers under long-term, fee-based contracts. Access GP is the general partner of ACMP.

Other includes other business activities that are not operating segments, as well as corporate operations.

Basis of Presentation

As disclosed in our 2012 Annual Report on Form 10-K, we contributed our 83.3 percent undivided interest of the olefins-production facility in Geismar, Louisiana, along with a refinery grade propylene splitter

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Notes (Continued)

and pipelines in the Gulf region to WPZ in November 2012. As a result, prior period segment disclosures have been recast for this transaction.

Also as disclosed in our 2012 Annual Report on Form 10-K, we have revised the overall presentation of our Consolidated Statement of Income, including the separate presentation of service revenues, product sales, product costs, and depreciation and amortization expenses. All prior periods presented have been recast, along with corresponding information presented in the Notes to Consolidated Financial Statements, to reflect this change.

Consolidated master limited partnership

During the first quarter of 2013, WPZ completed equity issuances of 15,937,500 common units representing limited partner interests, including 3,000,000 common units sold to us in a private placement transaction. Following these transactions, we own approximately 68 percent of the interests in WPZ, including the interests of the general partner, which are wholly owned by us, and incentive distribution rights as of March 31, 2013.

The previously described equity issuances by WPZ had the combined net impact of increasing our noncontrolling interests in consolidated subsidiaries by $435 million, capital in excess of par value by $114 million and deferred income taxes by $68 million in the Consolidated Balance Sheet.

WPZ is self-funding and maintains separate lines of bank credit and cash management accounts. Cash distributions from WPZ to us, including any associated with our incentive distribution rights, occur through the normal partnership distributions from WPZ to all partners.

Discontinued operations

The discontinued operations presented in the accompanying consolidated financial statements and notes primarily reflect gains in 2012 associated with certain of our former Venezuela operations. (See Note 3.)

Unless indicated otherwise, the information in the Notes to Consolidated Financial Statements relates to our continuing operations.

Note 2. Variable Interest Entities

We consolidate the activities of variable interest entities (VIEs) of which we are the primary beneficiary. The primary beneficiary of a VIE is the entity that has both (1) the power to direct the activities of the VIE that most significantly impact the VIE’s economic performance and (2) the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. As of March 31, 2013, WPZ has the following consolidated VIEs:

• Gulfstar One LLC (Gulfstar) is a consolidated wholly owned subsidiary that, due to certain risk sharing provisions in its customer contracts, is a VIE. WPZ, as construction agent for Gulfstar, will design, construct, and install a proprietary floating-production system, Gulfstar FPS^TM, and associated pipelines which will initially provide production handling and gathering services for the Tubular Bells oil and gas discovery in the eastern deepwater Gulf of Mexico. Construction is underway and the project is expected to be in service in 2014. WPZ has received certain advance payments from the producer customers and is committed to the producer customers to construct this system. The current estimate of the total remaining construction costs is less than $450 million. If the producer customers do not develop the offshore oil and gas fields to be connected to Gulfstar, they will be responsible for the firm price of building the facilities. On April 1, 2013, a third party contributed $187 million to Gulfstar in exchange for a 49 percent ownership interest in Gulfstar. This contribution was based on 49 percent of WPZ’s estimated cumulative net investment at that date, subject to adjustment within 60 days of the contribution date. The $187 million was then distributed to WPZ. Both WPZ and the third party are responsible for making regular capital contributions to fund each party’s respective share of ongoing construction costs.

• WPZ owns a 51 percent interest in Constitution, a subsidiary that, due to shipper fixed-payment commitments under its firm transportation contracts, is a VIE. WPZ is the primary beneficiary because it has

10

Notes (Continued)

the power over the decisions that most significantly impact Constitution’s economic performance. WPZ, as construction agent for Constitution, will build a pipeline connecting our gathering system in Susquehanna County, Pennsylvania, to the Iroquois Gas Transmission and the Tennessee Gas Pipeline systems. WPZ plans to place the project in service in March 2015 and estimates the total cost of the project to be approximately $680 million, which will be funded with capital contributions from WPZ, along with the other equity partners, proportional to ownership interest.

The following table presents amounts included in our Consolidated Balance Sheet that are for the use or obligation of these VIEs:

	March 31, 2013		December 31, 2012		Classification
	(Millions)
Gulfstar:
Construction work in process	$	572	$	532	Property, plant, and equipment, at cost
Accounts payable		88		124	Accounts payable
Construction retainage		1		-	Accrued liabilities
Deferred revenue associated with customer advance payments		109		109	Other noncurrent liabilities
Constitution:
Cash and cash equivalents		7		8	Cash and cash equivalents
Construction work in process		31		24	Property, plant, and equipment, at cost
Accounts payable		5		4	Accounts payable

WPZ has also identified certain interests in VIEs where it is not the primary beneficiary. These include WPZ’s equity method investments in Laurel Mountain Midstream, LLC (Laurel Mountain) and Discovery Producer Services LLC (Discovery). These entities are considered to be VIEs generally due to contractual provisions that transfer certain risks to customers. As certain significant decisions in the management of these entities require a unanimous vote of all members, WPZ is not the primary beneficiary. Our maximum exposure to loss is limited to the carrying value of our investments, which are $483 million and $357 million for Laurel Mountain and Discovery, respectively, at March 31, 2013.

Note 3. Discontinued Operations

Summarized Results of Discontinued Operations

	Three months ended March 31,
	2013			2012
	(Millions)
Income (loss) from discontinued operations before gain on reconsolidation	$	(1	)	$	(8	)
Gain on reconsolidation		-			144
Income (loss) from discontinued operations	$	(1	)	$	136
Income (loss) from discontinued operations:
Attributable to The Williams Companies, Inc.	$	(1	)	$	136

Gain on reconsolidation for 2012 is related to our majority ownership in entities (the Wilpro entities) that owned and operated the El Furrial and PIGAP II gas compression facilities prior to their expropriation by the Venezuelan government in May 2009. We deconsolidated the Wilpro entities in 2009. In the first quarter of 2012, the El Furrial and PIGAP II assets were sold as part of a settlement related to the 2009 expropriation of these assets. Upon closing,

11

the lenders that had provided financing for these operations were repaid in full, and the Wilpro entities received $98 million in cash and the right to receive quarterly cash installments of $15 million (receivable) plus interest through the first quarter of 2016. Following the settlement and repayment in full of the lenders, we reestablished control and, therefore, reconsolidated the Wilpro entities and recognized a gain on reconsolidation. This gain reflected our share of the cash, including cash received in the settlement, and the estimated fair value of the receivable held by the Wilpro entities at the time of reconsolidation. See Note 11 for a further discussion of this receivable.

Note 4. Asset Sales and Other Accruals

Other investing income – net includes $13 million of interest income in the first quarter of 2013 associated with a receivable related to the sale of certain former Venezuela assets (see Note 3). This amount reflects a first-quarter 2013 change in yield associated with a revision in our estimate of the cash flows expected to be received as a result of continued timely payment by the counterparty. In the first quarter of 2012, other investing income – net includes $63 million of income related to the 2010 sale of our interest in Accroven SRL. As part of a settlement regarding certain Venezuelan assets in the first quarter of 2012 (see Note 3), we also received payment for all outstanding balances due from this sale, including interest. Payments were recognized upon receipt, as future collections were not reasonably assured.

Note 5. Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes includes:

	Three months ended March 31,
	2013			2012
	(Millions)
Current:
Federal	$	(11	)	$	21
State		2			4
Foreign		2			21
		(7	)		46
Deferred:
Federal		82			87
State		13			(3	)
Foreign		8			3
		103			87
Total provision (benefit)	$	96		$	133

The effective income tax rates for the total provision for the three months ended March 31, 2013 and 2012 are less than the federal statutory rate primarily due to the impact of nontaxable noncontrolling interests and taxes on foreign operations, partially offset by the effect of state income taxes.

During the first quarter of 2013, we finalized a settlement with the Internal Revenue Service (IRS) on tax matters related to the IRS’s examination of our 2009 and 2010 consolidated corporate income tax returns. We recorded a tax provision of approximately $2 million related to these matters during the third quarter of 2012. With respect to the examined years, we made cash payments of $12 million to the IRS in February of 2013.

With the spin-off of WPX Energy, Inc. (WPX) on December 31, 2011, WPX entered into a tax sharing agreement with us under which we are generally liable for all U.S. federal, state, local and foreign income taxes attributable to WPX with respect to taxable periods ending on or before the distribution date. We are also principally responsible for managing any income tax audits by the various tax jurisdictions for pre-spin-off periods. In 2012, we prepared pro forma tax returns for each tax period in which WPX or any of its subsidiaries were combined or consolidated with us for purposes of any 2011 tax return. In the first quarter of 2013, we reimbursed WPX a net $2 million for the additional losses shown on the pro forma tax returns, offset with additional tax resulting from the 2009 to 2010 IRS settlement.

See accompanying notes.

12

Notes (Continued)

During the next 12 months, we do not expect ultimate resolution of any unrecognized tax benefit associated with domestic or international matters to have a material impact on our unrecognized tax benefit position.

Note 6. Earnings (Loss) Per Common Share from Continuing Operations

	Three months ended March 31,
	2013		2012
	(Dollars in millions, except per-share
	amounts; shares in thousands)
Income (loss) from continuing operations attributable to The Williams
Companies, Inc. available to common stockholders for basic and diluted earnings (loss) per common share	$	162	$	287
Basic weighted-average shares		682,052		593,231
Effect of dilutive securities:
Nonvested restricted stock units		2,720		3,564
Stock options		2,187		2,938
Convertible debentures		184		787
Diluted weighted-average shares		687,143		600,520
Earnings (loss) per common share from continuing operations:
Basic	$	.24	$	.48
Diluted	$	.23	$	.47

Effective January 1, 2012, new awards of time-based restricted stock units contain a nonforfeitable right to dividends during the vesting period. These share-based payment awards are participating securities and are included in the computation of earnings (loss) per common share pursuant to the two-class method. The impact for the three months ended March 31, 2013 and 2012, is immaterial.

For the three months ended March 31, 2012, 1.1 million weighted-average stock options have been excluded from the computation of diluted earnings per common share as their inclusion would be antidilutive.

The table below includes information related to stock options that were outstanding at March 31 of each respective year but have been excluded from the computation of weighted-average stock options due to the option exercise price exceeding the first quarter weighted-average market price of our common shares.

	March 31,
	2013		2012
Options excluded (millions)		-		0.9
Weighted-average exercise price of options excluded		N/A		$29.72
Exercise price ranges of options excluded		N/A		$29.34 - $29.72
First quarter weighted-average market price		$34.89		$29.33

13

Notes (Continued)

Note 7. Employee Benefit Plans

Net periodic benefit cost is as follows:

							Other Postretirement
	Pension Benefits						Benefits
	Three months ended March 31,						Three months ended March 31,
	2013			2012			2013			2012
	(Millions)
Components of net periodic benefit cost:
Service cost	$	11		$	10		$	1		$	1
Interest cost		13			14			3			3
Expected return on plan assets		(15	)		(16	)		(2	)		(2	)
Amortization of prior service credit		-			-			(2	)		(2	)
Amortization of net actuarial loss		15			13			2			3
Net periodic benefit cost	$	24		$	21		$	2		$	3

Amortization of prior service credit and net actuarial loss included in net periodic benefit cost for our other postretirement benefit plans associated with our Federal Energy Regulatory Commission (FERC) regulated gas pipelines are recorded to net regulatory assets instead of other comprehensive income (loss).

Amounts recognized in net regulatory assets include:

	Three months ended March 31,
	2013			2012
	(Millions)
Amortization of prior service credit	$	(1	)	$	(2	)
Amortization of net actuarial loss		1			2

During the three months ended March 31, 2013, we contributed $23 million to our pension plans and $3 million to our other postretirement benefit plans. We presently anticipate making additional contributions of approximately $69 million to our pension plans and approximately $6 million to our other postretirement benefit plans in the remainder of 2013.

Note 8. Inventories

	March 31,		December 31,
	2013		2012
	(Millions)
Natural gas liquids, olefins, and natural gas in underground storage	$	109	$	97
Materials, supplies, and other		81		78
	$	190	$	175

Note 9. Debt and Banking Arrangements

Credit Facilities

At March 31, 2013, letter of credit capacity under our $900 million and WPZ’s $2.4 billion credit facilities is $700 million and $1.3 billion, respectively. At March 31, 2013, no letters of credit have been issued and no loans are outstanding on our credit facility. At March 31, 2013, no letters of credit have been issued and loans totaling $250 million are outstanding on WPZ’s credit facility. We have issued letters of credit totaling $17 million as of March 31, 2013, under certain bilateral bank agreements.

Commercial Paper Program

In March 2013, WPZ initiated a commercial paper program. The program allows a maximum outstanding amount at any time of $2 billion of unsecured commercial paper notes. The maturities of the commercial paper notes will vary but may not exceed 397 days from the date of issuance. The commercial paper notes will be sold under customary terms in the commercial paper market and will be issued at a discount from par, or, alternatively, will be sold at par and bear varying interest rates on a fixed or floating basis. Proceeds from these notes are expected to be used to fund planned capital expenditures and for other general partnership purposes. WPZ has not yet issued any notes under this commercial paper program.

14

Notes (Continued)

Note 10. Stockholders’ Equity

The following table presents the changes in accumulated other comprehensive income (loss) by component, net of income taxes:

	Cash Flow Hedges			Foreign Currency Translation			Pension and Other Post Retirement Benefits			Total
	(Millions)
Balance at December 31, 2012	$	(1	)	$	169		$	(530	)	$	(362	)
Other comprehensive income (loss) before reclassifications		-			(21	)		-			(21	)
Amounts reclassified from accumulated other comprehensive income (loss)		-			-			9			9
Other comprehensive income (loss)		-			(21	)		9			(12	)
Balance at March 31, 2013	$	(1	)	$	148		$	(521	)	$	(374	)

Reclassifications out of accumulated other comprehensive income (loss) are presented in the following table by component as of March 31, 2013:

Component	Reclassifications			Classification
	(Millions)
Pension and other postretirement benefits:
Amortization of prior service cost (credit) included in net periodic benefit cost	$	(1	)	Note 7
Amortization of actuarial (gain) loss included in net periodic benefit cost		16		Note 7
Reclassifications before income tax		15
Income tax benefit on amortization		(6	)	Provision (benefit) for income taxes
Reclassifications during the period	$	9

Note 11. Fair Value Measurements

The following table presents, by level within the fair value hierarchy, certain of our financial assets and liabilities. The carrying values of cash and cash equivalents, accounts receivable and accounts payable approximate fair value because of the short-term nature of these instruments. Therefore, these assets and liabilities are not presented in the following table.

15

Notes (Continued)

							Fair Value Measurements Using
							Quoted
							Prices In
							Active		Significant
							Markets for		Other			Significant
							Identical		Observable			Unobservable
	Carrying			Fair			Assets		Inputs			Inputs
	Amount			Value			(Level 1)		(Level 2)			(Level 3)
	(Millions)
Assets (liabilities) at March 31, 2013:
Measured on a recurring basis:
ARO Trust investments	$	19		$	19		$	19	$	-		$	-
Energy derivatives assets not designated as hedging instruments		5			5			-		-			5
Energy derivatives liabilities not designated as hedging instruments		(1	)		(1	)		-		-			(1	)
Additional disclosures:
Notes receivable and other		90			144			-		8			136
Long-term debt, including current portion (a)		(10,609	)		(12,129	)		-		(12,129	)		-
Guarantee		(33	)		(30	)		-		(30	)		-
Assets (liabilities) at December 31, 2012:
Measured on a recurring basis:
ARO Trust investments	$	18		$	18		$	18	$	-		$	-
Energy derivatives assets not designated as hedging instruments		5			5			-		-			5
Energy derivatives liabilities not designated as hedging instruments		(1	)		(1	)		-		-			(1	)
Additional disclosures:
Notes receivable and other		95			138			2		8			128
Long-term debt, including current portion (a)		(10,734	)		(12,388	)		-		(12,388	)		-
Guarantee		(33	)		(31	)		-		(31	)		-

(a) Excludes capital leases

Fair Value Methods

We use the following methods and assumptions in estimating the fair value of our financial instruments:

Assets and liabilities measured at fair value on a recurring basis

ARO Trust investments: Transco deposits a portion of its collected rates, pursuant to its 2008 rate case settlement, into an external trust (ARO Trust) that is specifically designated to fund future asset retirement obligations. The ARO Trust invests in a portfolio of actively traded mutual funds that are measured at fair value on a recurring basis based on quoted prices in an active market, is classified as available-for-sale, and is reported in regulatory assets, deferred charges, and other in the Consolidated Balance Sheet. Both realized and unrealized gains and losses are ultimately recorded as regulatory assets or liabilities.

Energy derivatives: Energy derivatives include commodity based exchange-traded contracts and over-the-counter (OTC) contracts, which consist of physical forwards, futures, and swaps that are measured at fair value on a recurring basis. The fair value amounts are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under the terms of our master netting arrangements. Further, the amounts do not include cash held on deposit in margin accounts that we have received or remitted to collateralize certain derivative positions. Energy derivatives assets are reported in other current assets and deferred charges and regulatory assets, deferred charges, and other in the Consolidated Balance Sheet. Energy derivatives liabilities are reported in other noncurrent liabilities in the Consolidated Balance Sheet.

Reclassifications of fair value between Level 1, Level 2, and Level 3 of the fair value hierarchy, if applicable, are made at the end of each quarter. No transfers between Level 1 and Level 2 occurred during the three months ended March 31, 2013 or 2012.

16

Notes (Continued)

Additional fair value disclosures

Notes receivable and other: Notes receivable and other includes a receivable related to the sale of certain former Venezuela assets. To determine the disclosed fair value of this receivable at March 31, 2013, we considered an income approach. We calculated the net present value of a probability-weighted set of cash flows utilizing assumptions based on contractual terms, historical payment patterns by the counterparty, future probabilities of default, our likelihood of using arbitration if the counterparty does not perform, and discount rates. We determined the fair value of the receivable to be $101 million at March 31, 2013. The carrying value of this receivable is $47 million at March 31, 2013. The current and noncurrent portions are reported in accounts and notes receivable and regulatory assets, deferred charges, and other, respectively, in the Consolidated Balance Sheet.

Notes receivable and other also includes a receivable from our former affiliate, WPX (see Note 12) and other notes receivable. The disclosed fair value of these receivables is determined by an income approach which considers the underlying contract amounts and our assessment of our ability to recover these amounts. The current portion is reported in accounts and notes receivable, and the noncurrent portion is reported in regulatory assets, deferred charges, and other in the Consolidated Balance Sheet.

Long-term debt: The disclosed fair value of our long-term debt is determined by a market approach using broker quoted indicative period-end bond prices. The quoted prices are based on observable transactions in less active markets for our debt or similar instruments.

Guarantee: The guarantee represented in the table consists of a guarantee we have provided in the event of nonpayment by our previously owned communications subsidiary, Williams Communications Group (WilTel), on a lease performance obligation that extends through 2042.

To estimate the disclosed fair value of the guarantee, an estimated default rate is applied to the sum of the future contractual lease payments using an income approach. The estimated default rate is determined by obtaining the average cumulative issuer-weighted corporate default rate based on the credit rating of WilTel’s current owner and the term of the underlying obligation. The default rate is published by Moody’s Investors Service. This guarantee is reported in accrued liabilities in the Consolidated Balance Sheet.

Guarantees

We are required by our revolving credit agreements to indemnify lenders for certain taxes required to be withheld from payments due to the lenders and for certain tax payments made by the lenders. The maximum potential amount of future payments under these indemnifications is based on the related borrowings and such future payments cannot currently be determined. These indemnifications generally continue indefinitely unless limited by the underlying tax regulations and have no carrying value. We have never been called upon to perform under these indemnifications and have no current expectation of a future claim.

Regarding our previously described guarantee of Wiltel’s lease performance, the maximum potential exposure is approximately $36 million at March 31, 2013 and December 31, 2012. Our exposure declines systematically throughout the remaining term of WilTel’s obligation.

We have provided guarantees in the event of nonpayment by our previously owned subsidiary, WPX, on certain contracts, primarily a natural gas purchase contract extending through 2023. We estimate the maximum undiscounted potential future payment obligation under these remaining guarantees is approximately $169 million at March 31, 2013. Our recorded liability for these guarantees, which considers our estimate of the fair value of the guarantees, is insignificant.

17

Notes (Continued)

Note 12. Contingent Liabilities

Indemnification of WPX Matters

We have agreed to indemnify our former affiliate, WPX and its subsidiaries, related to the following matters. In connection with this indemnification, we have retained applicable accrued asset and liability balances associated with these matters, and as a result, have an indirect exposure to future developments in these matters.

Issues resulting from California energy crisis

WPX’s former power business was engaged in power marketing in various geographic areas, including California. Prices charged for power by WPX and other traders and generators in California and other western states in 2000 and 2001 were challenged in various proceedings, including those before the FERC. WPX has entered into settlements with the State of California (State Settlement), major California utilities (Utilities Settlement), and others that substantially resolved each of these issues with these parties.

Although the State Settlement and Utilities Settlement resolved a significant portion of the refund issues among the settling parties, WPX continues to have potential refund exposure to nonsettling parties, including various California end users that did not participate in the Utilities Settlement. WPX and certain California utilities have agreed in principle to resolve WPX’s collection of accrued interest from counterparties as well as WPX’s payment of accrued interest on refund amounts. As currently contemplated by the parties, the settlement, which is subject to FERC and California regulatory approval, would resolve most of WPX’s legal issues arising from the 2000-2001 California Energy Crisis. We currently have a net receivable from WPX related to these matters.

Reporting of natural gas-related information to trade publications

Direct and indirect purchasers of natural gas in various states filed class actions in Nevada federal district court against WPX and others alleging the manipulation of published gas price indices and seeking unspecified amounts of damages.

In 2011, the Nevada district court granted WPX’s joint motions for summary judgment to preclude the plaintiffs’ state law claims because the federal Natural Gas Act gives the FERC exclusive jurisdiction to resolve those issues. The court also denied the plaintiffs’ class certification motion as moot. The plaintiffs appealed the court’s ruling and on April 10, 2013, the Ninth Circuit Court of Appeals reversed the district court and remanded the cases to the district court to permit the plaintiffs to pursue their state antitrust claims for natural gas sales that were not subject to FERC jurisdiction under the Natural Gas Act. WPX and the other defendants intend either to request an en banc rehearing before the Ninth Circuit or to seek a writ of certiorari from the U.S. Supreme Court. Because of the uncertainty around the remaining pending unresolved issues, including an insufficient description of the purported classes and other related matters, we cannot reasonably estimate a range of potential exposures at this time. However, it is reasonably possible that the ultimate resolution of these items and our related indemnification obligation could result in future charges that may be material to our results of operations.

Other Legal Matters

Gulf Liquids litigation

Gulf Liquids contracted with Gulsby Engineering Inc. (Gulsby) and Gulsby-Bay (a joint venture between Gulsby and Bay Ltd.) for the construction of certain gas processing plants in Louisiana. National American Insurance Company (NAICO) and American Home Assurance Company provided payment and performance bonds for the projects. In 2001, the contractors and sureties filed multiple cases in Louisiana and Texas against Gulf Liquids and us.

In 2006, at the conclusion of the consolidated trial of the asserted contract and tort claims, the jury returned its actual and punitive damages verdict against us and Gulf Liquids. Based on our interpretation of the jury verdicts, we recorded a charge based on our estimated exposure for actual damages of approximately $68 million plus potential interest of approximately $20 million. In addition, we concluded that it was reasonably possible that any ultimate

18

Notes (Continued)

judgment might have included additional amounts of approximately $199 million in excess of our accrual, which primarily represented our estimate of potential punitive damage exposure under Texas law.

From May through October 2007, the court entered seven post-trial orders in the case (interlocutory orders) which, among other things, overruled the verdict award of tort and punitive damages as well as any damages against us. The court also denied the plaintiffs’ claims for attorneys’ fees. On January 28, 2008, the court issued its judgment awarding damages against Gulf Liquids of approximately $11 million in favor of Gulsby and approximately $4 million in favor of Gulsby-Bay. Gulf Liquids, Gulsby, Gulsby-Bay, Bay Ltd., and NAICO appealed the judgment. In February 2009, we settled with certain of these parties and reduced our accrued liability as of December 31, 2008, by $43 million, including $11 million of interest. On February 17, 2011, the Texas Court of Appeals upheld the dismissals of the tort and punitive damages claims. As a result, we reduced our accrued liability as of December 31, 2011 by $33 million, including $14 million of interest. The Texas Court of Appeals also reversed and remanded the remaining claims for further proceedings. None of the parties filed a petition for review in the Texas Supreme Court. On May 8, 2012, the Texas Court of Appeals issued its mandate remanding the original breach of contract claims involving Gulsby and attorney fee claims (the remaining claims) to trial court.

Alaska refinery contamination litigation

In January 2010, James West filed a class action lawsuit in state court in Fairbanks, Alaska on behalf of individual property owners whose water contained sulfolane contamination allegedly emanating from the Flint Hills Oil Refinery in North Pole, Alaska. The suit named our subsidiary, Williams Alaska Petroleum Inc. (WAPI), and Flint Hills Resources Alaska, LLC (FHRA), a subsidiary of Koch Industries, Inc., as defendants. We owned and operated the refinery until 2004 when we sold it to FHRA. We and FHRA have made claims under the pollution liability insurance policy issued in connection with the sale of the North Pole refinery to FHRA. We and FHRA also filed claims against each other seeking, among other things, contractual indemnification alleging that the other party caused the sulfolane contamination.

In 2011, we and FHRA settled the James West claim. Our claims against FHRA and their claims against us remain outstanding. We and FHRA filed motions for summary judgment on the other’s claims, but the motions are unlikely to resolve all the outstanding claims. An April 2013 trial date had been scheduled but has been stricken and has not been reset.

19

Notes (Continued)

We currently estimate that our reasonably possible loss exposure in this matter could range from an insignificant amount up to $32 million, although uncertainties inherent in the litigation process, expert evaluations, and jury dynamics might cause our exposure to exceed that amount.

Independent of the litigation matter described in the preceding paragraphs, the Alaska Department of Environmental Conservation (ADEC) indicated that it views FHRA and us as responsible parties. During the first quarter 2013, ADEC informed FHRA and us that it intends to enter a compliance order to address the environmental remediation of sulfolane and other possible contaminants including cleanup work outside the refinery’s boundaries to be performed in 2014. In addition, ADEC will seek from each of FHRA and us an adequate financial performance guarantee for the benefit of ADEC. As such, we will likely be required to contribute some amount, whether to reimburse the State, to reimburse FHRA, or to comply with an ADEC order. Due to the ongoing assessment of the level and extent of sulfolane contamination and the ultimate cost of remediation and division of costs between the named responsible parties, we are unable to estimate a range of liability at this time.

Other

In 2003, we entered into an agreement to sublease certain underground storage facilities to Liberty Gas Storage (Liberty). We have asserted claims against Liberty for prematurely terminating the sublease and for damage caused to the facilities. In February 2011, Liberty asserted a counterclaim for costs in excess of $200 million associated with its use of the facilities. Due to the lack of information currently available, we are unable to evaluate the merits of the counterclaim and determine the amount of any possible liability.

On August 31, 2012, Transco submitted to the FERC a general rate filing principally designed to recover increased costs and to comply with the terms of the settlement in its prior rate proceeding. The new rates became effective March 1, 2013, subject to refund and the outcome of a hearing. We have provided a reserve for rate refunds which we believe is adequate for any refunds that may be required.

Environmental Matters

We are a participant in certain environmental activities in various stages including assessment studies, cleanup operations and remedial processes at certain sites, some of which we currently do not own. We are monitoring these sites in a coordinated effort with other potentially responsible parties, the U.S. Environmental Protection Agency (EPA), and other governmental authorities. We are jointly and severally liable along with unrelated third parties in some of these activities and solely responsible in others. Certain of our subsidiaries have been identified as potentially responsible parties at various Superfund and state waste disposal sites. In addition, these subsidiaries have incurred, or are alleged to have incurred, various other hazardous materials removal or remediation obligations under environmental laws. As of March 31, 2013, we have accrued liabilities totaling $49 million for these matters, as discussed below. Our accrual reflects the most likely costs of cleanup, which are generally based on completed assessment studies, preliminary results of studies or our experience with other similar cleanup operations. Certain assessment studies are still in process for which the ultimate outcome may yield significantly different estimates of most likely costs. Any incremental amount in excess of amounts currently accrued cannot be reasonably estimated at this time due to uncertainty about the actual number of contaminated sites ultimately identified, the actual amount and extent of contamination discovered and the final cleanup standards mandated by the EPA and other governmental authorities.

20

Notes (Continued)

The EPA and various state regulatory agencies routinely promulgate and propose new rules, and issue updated guidance to existing rules. More recent rules and rulemakings include, but are not limited to, rules for reciprocating internal combustion engine maximum achievable control technology, new air quality standards for ground level ozone, and one hour nitrogen dioxide emission limits. We are unable to estimate the costs of asset additions or modifications necessary to comply with these new regulations due to uncertainty created by the various legal challenges to these regulations and the need for further specific regulatory guidance.

Continuing operations

Our interstate gas pipelines are involved in remediation activities related to certain facilities and locations for polychlorinated biphenyls, mercury, and other hazardous substances. These activities have involved the EPA and various state environmental authorities, resulting in our identification as a potentially responsible party at various Superfund waste sites. At March 31, 2013, we have accrued liabilities of $9 million for these costs. We expect that these costs will be recoverable through rates.

We also accrue environmental remediation costs for natural gas underground storage facilities, primarily related to soil and groundwater contamination. At March 31, 2013, we have accrued liabilities totaling $11 million for these costs.

Former operations, including operations classified as discontinued

We have potential obligations in connection with assets and businesses we no longer operate. These potential obligations include the indemnification of the purchasers of certain of these assets and businesses for environmental and other liabilities existing at the time the sale was consummated. Our responsibilities relate to the operations of the assets and businesses described below.

• Former agricultural fertilizer and chemical operations and former retail petroleum and refining operations;

• Former petroleum products and natural gas pipelines;

• Former petroleum refining facilities;

• Former exploration and production and mining operations;

• Former electricity and natural gas marketing and trading operations.

At March 31, 2013, we have accrued environmental liabilities of $29 million related to these matters.

Other Divestiture Indemnifications

Pursuant to various purchase and sale agreements relating to divested businesses and assets, we have indemnified certain purchasers against liabilities that they may incur with respect to the businesses and assets acquired from us. The indemnities provided to the purchasers are customary in sale transactions and are contingent upon the purchasers incurring liabilities that are not otherwise recoverable from third parties. The indemnities generally relate to breach of warranties, tax, historic litigation, personal injury, property damage, environmental matters, right of way and other representations that we have provided.

At March 31, 2013, other than as previously disclosed, we are not aware of any material claims involving the indemnities; thus, we do not expect any of the indemnities provided pursuant to the sales agreements to have a material impact on our future financial position. Any claim for indemnity brought against us in the future may have a material adverse effect on our results of operations in the period in which the claim is made.

In addition to the foregoing, various other proceedings are pending against us which are incidental to our operations.

21

Notes (Continued)

Summary

We have disclosed our estimated range of reasonably possible losses for certain matters above, as well as all significant matters for which we are unable to reasonably estimate a range of possible loss. We estimate that for all other matters for which we are able to reasonably estimate a range of loss, our aggregate reasonably possible losses beyond amounts accrued are immaterial to our expected future annual results of operations, liquidity and financial position. These calculations have been made without consideration of any potential recovery from third parties.

Note 13. Segment Disclosures

Our reporting segments are Williams Partners, Williams NGL & Petchem Services, and Access Midstream Partners. All remaining business activities are included in Other. (See Note 1.)

Performance Measurement

We currently evaluate performance based upon segment profit (loss) from operations, which includes segment revenues from external and internal customers, segment costs and expenses, equity earnings (losses) and income (loss) from investments. General corporate expenses represent selling, general, and administrative expenses that are not allocated to our segments. Intersegment revenues are generally accounted for at current market prices as if the sales were to unaffiliated third parties.

22

Notes (Continued)

The following table reflects the reconciliation of segment revenues and segment profit (loss) to revenues and operating income (loss) as reported in the Consolidated Statement of Income.

	Williams Partners		Williams NGL & Petchem Services			Access Midstream Partners		Other			Eliminations			Total
	(Millions)
Three months ended March 31, 2013
Segment revenues:
Service revenues
External	$	701	$	2		$	-	$	3		$	-		$	706
Internal		-		-			-		4			(4	)		-
Total service revenues		701		2			-		7			(4	)		706
Product sales
External		1,055		49			-		-			-			1,104
Internal		-		39			-		-			(39	)		-
Total product sales		1,055		88			-		-			(39	)		1,104
Total revenues	$	1,756	$	90		$	-	$	7		$	(43	)	$	1,810
Segment profit (loss)	$	456	$	36		$	-	$	(5	)	$	-		$	487
Less:
Equity earnings (losses)		18		-			-		-			-			18
Income (loss) from investments		-		(1	)		-		-			-			(1	)
Segment operating income (loss)	$	438	$	37		$	-	$	(5	)	$	-			470
General corporate expenses															(44	)
Operating income (loss)														$	426
Three months ended March 31, 2012
Segment revenues:
Service revenues
External	$	673	$	-		$	-	$	4		$	-		$	677
Internal		-		-			-		2			(2	)		-
Total service revenues		673		-			-		6			(2	)		677
Product sales
External		1,295		47			-		-			-			1,342
Internal		-		42			-		-			(42	)		-
Total product sales		1,295		89			-		-			(42	)		1,342
Total revenues	$	1,968	$	89		$	-	$	6		$	(44	)	$	2,019
Segment profit (loss)	$	551	$	40		$	-	$	59		$	-		$	650
Less:
Equity earnings (losses)		30		-			-		1			-			31
Income (loss) from investments		-		(1	)		-		53			-			52
Segment operating income (loss)	$	521	$	41		$	-	$	5		$	-			567
General corporate expenses															(40	)
Operating income (loss)														$	527

23

Notes (Continued)

Item 2

Management’s Discussion and Analysis of

Financial Condition and Results of Operations

General

We are an energy infrastructure company focused on connecting North America’s significant hydrocarbon resource plays to growing markets for natural gas, natural gas liquids (NGLs), and olefins. Our operations are located principally in the United States, but span from the deepwater Gulf of Mexico to the Canadian oil sands, and are organized into the Williams Partners, Williams NGL & Petchem Services, and Access Midstream Partners reporting segments. All remaining business activities are included in Other.

Williams Partners

Williams Partners includes Williams Partners L.P. (WPZ), our consolidated master limited partnership, which includes two interstate natural gas pipelines, as well as investments in natural gas pipeline-related companies, which serve regions from the San Juan basin in northwestern New Mexico and southwestern Colorado to Oregon and Washington and from the Gulf of Mexico to the northeastern United States. WPZ also includes natural gas gathering, processing, and treating facilities and oil gathering and transportation facilities located primarily in the Rocky Mountain, Gulf Coast, and Marcellus Shale regions of the United States. WPZ also owns a 5/6 interest in an olefin production facility, along with a refinery grade propylene splitter and pipelines in the Gulf region. As of March 31, 2013, we own approximately 68 percent of the interests in WPZ, including the interests of the general partner, which is wholly owned by us, and incentive distribution rights.

Williams Partners’ ongoing strategy is to safely and reliably operate large-scale, interstate natural gas transmission and midstream infrastructures where our assets can be fully utilized and drive low per-unit costs. We focus on consistently attracting new business by providing highly reliable service to our customers and utilizing our low cost-of-capital to invest in growing markets, including the deepwater Gulf of Mexico, the Marcellus Shale, the western United States, and areas of increasing natural gas demand.

Williams Partners’ interstate transmission and related storage activities are subject to regulation by the Federal Energy Regulatory Commission (FERC) and as such, our rates and charges for the transportation of natural gas in interstate commerce, and the extension, expansion or abandonment of jurisdictional facilities and accounting, among other things, are subject to regulation. The rates are established through the FERC’s ratemaking process. Changes in commodity prices and volumes transported have little near-term impact on revenues because the majority of cost of service is recovered through firm capacity reservation charges in transportation rates.

Williams NGL & Petchem Services

Williams NGL & Petchem Services includes our oil sands offgas processing plant near Fort McMurray, Alberta and our NGL/olefin fractionation facility and butylene/butane (B/B) splitter facility at Redwater, Alberta. We produce NGLs and propylene. Our NGL products include propane, normal butane, isobutane/butylene (butylene), and condensate.

Access Midstream Partners

Access Midstream Partners includes our equity method investment in Access Midstream Partners L.P. (ACMP), acquired in December 2012. As of March 31, 2013, this investment includes a 24 percent limited partner interest in ACMP and a 50 percent indirect interest in Access Midstream Partners GP L.L.C. (Access GP), including incentive distribution rights. ACMP is a publicly traded master limited partnership that owns, operates, develops, and acquires natural gas gathering systems and other midstream energy assets, which bolsters our position in the Marcellus and Utica shale plays and adds diversity via the Eagle Ford, Haynesville, Barnett, Mid-Continent, and Niobrara areas.

24

Unless indicated otherwise, the following discussion and analysis of our results of operations and financial condition and liquidity relates to our current continuing operations and should be read in conjunction with the consolidated financial statements and notes thereto of this Form 10-Q and our 2012 Annual Report on Form 10-K, filed February 27, 2013.

Dividends

In March 2013, we paid a regular quarterly dividend of $0.33875 per share, which was 31 percent higher than the same period last year and 4 percent higher than the prior quarter. Also, consistent with our expectation of receiving increasing cash distributions from our interests in WPZ and ACMP, as well as strong cash flow growth from Williams NGL & Petchem Services, we expect to increase our dividend on a quarterly basis. We expect a 20 percent annual dividend increase in 2013, 2014, and 2015.

Overview of Three Months Ended March 31, 2013

Income (loss) from continuing operations attributable to The Williams Companies, Inc., for the three months ended March 31, 2013, changed unfavorably by $125 million compared to the three months ended March 31, 2012. This change primarily reflects:

• An $83 million unfavorable change in segment operating income at Williams Partners primarily due to lower NGL margins partially offset by improved olefin production margins. (See Results of Operations – Segments, Williams Partners.);

• The absence of $63 million of income recognized in 2012 related to the 2010 sale of our interest in Accroven SRL. (See Note 4 of Notes to Consolidated Financial Statements.)

See additional discussion in Results of Operations.

Williams Partners

Three Rivers Midstream

In April 2013, we announced an agreement to launch a new midstream joint project to provide gas gathering and gas processing services for production located in northwest Pennsylvania. The project will invest in both wet-gas handling infrastructure and dry-gas infrastructure serving the Marcellus and Utica Shale wells in the area. We will initially own substantially all of the new project, Three Rivers Midstream, and operate the assets. Our partner has the right to invest capital and increase its ownership to a maximum of 50 percent by July 2015. Our portion of initial capital expenditures on the Three Rivers Midstream plant is expected to be approximately $150 million. This does not include the cost of the gathering system, which will be determined in the future based upon the producers’ needs. Subsequent capital investment is expected as the business and scale increases.

Three Rivers Midstream has signed a long-term fee-based dedicated gathering and processing agreement for our partner’s production in the area, including approximately 275,000 dedicated acres. Three Rivers Midstream plans to construct a 200 million cubic feet per day (MMcf/d) cryogenic gas processing plant and related facilities at a location to be determined. The initial plant is expected to be placed into service by second quarter 2015. The system is expected to be connected to two major proposed developments in Pennsylvania – our partner’s proposed ethylene cracker (feasibility study in progress) in Beaver County and the proposed Williams joint project to develop the Bluegrass Pipeline system that would deliver Marcellus and Utica liquids to the Gulf Coast and export markets.

Gulfstar FPS^TM Partner

Effective April 1, 2013, WPZ sold a 49 percent interest in its first Gulfstar FPS^TM project to a third party for $187 million, representing their proportionate share of estimated capital expenditures to date. Gulfstar FPS^TM is our proprietary floating production system and has been under construction since late 2011. It is supported by multiple agreements with two major producers to provide production handling, export pipeline, oil and gas gathering and gas processing services for the Tubular Bells field development located in the eastern deepwater Gulf of Mexico. The

25

Management’s Discussion and Analysis (Continued)

Gulfstar FPS^TM will tie into our wholly owned oil and gas gathering and gas processing systems in the eastern Gulf of Mexico. Gulfstar FPS^TM is expected to have an initial capacity of 60 thousand barrels of oil per day (Mbbls/d), up to 200 MMcf/d of natural gas and the capability to provide seawater injection services. We expect Gulfstar FPS™ to be capable of serving as a central host facility for other deepwater prospects in the area. Construction is underway and the project is expected to be in service in 2014.

Mid-Atlantic Connector

The Mid-Atlantic Connector Project involves an expansion of our mainline from an existing interconnection with East Tennessee Natural Gas in North Carolina to markets as far downstream as Maryland. In July 2011, we received approval from the FERC for the project. The capital cost of the project is estimated to be approximately $60 million. We placed the project into service in the first quarter of 2013, and it increased capacity by 142 thousand dekatherms per day (Mdth/d).

Volume Impacts in 2013

Due to unfavorable ethane economics, we reduced our recoveries of ethane in our onshore plants during most of the first quarter of 2013, which resulted in 53 percent lower NGL equity sales volumes and 34 percent lower NGL production volumes in the first quarter of 2013 compared to the same period of 2012. In addition to the impact from reduced ethane recoveries, lower equity ethane sales volumes were impacted by severe winter weather conditions which prevented producers from delivering gas and a change in a customer’s contract from percent-of-liquids to fee-based processing, partially offset by favorable impacts from higher concentrations of liquid-rich gas processed from deliveries on our Perdido pipeline.

Volatile Commodity Prices

NGL margins were approximately 21 percent lower in the first quarter of 2013 compared to the fourth quarter of 2012, driven by reduced ethane recoveries, as previously mentioned, coupled with a continued decline in NGL prices. However, our average per-unit NGL margin in the first quarter of 2013 has increased compared to the fourth quarter of 2012 as the relative mix of NGL products produced has shifted to a greater proportion of higher-margin non-ethane products. Key factors in the NGL market weakness have been high propane inventories caused by the extremely warm winter and the effect of the propane oversupply on ethane inventories and pricing.

NGL margins are defined as NGL revenues less any applicable British thermal unit (Btu) replacement cost, plant fuel, and third-party transportation and fractionation. Per-unit NGL margins are calculated based on sales of our own equity volumes at the processing plants. Our equity volumes include NGLs where we own the rights to the value from NGLs recovered at our plants under both “keep-whole” processing agreements, where we have the obligation to replace the lost heating value with natural gas, and “percent-of-liquids” agreements whereby we receive a portion of the extracted liquids with no obligation to replace the lost heating value.

26

Management’s Discussion and Analysis (Continued)

Williams NGL & Petchem Services

During the first quarter of 2013, we announced plans to build Canada’s first propane dehydrogenation (PDH) facility, located in Alberta. The new PDH facility will significantly increase production of polymer-grade propylene from 180 million pounds of polymer-grade propylene to in excess of 1 billion pounds per year. The expected start-up date for the PDH facility is second quarter 2016.

Other

In March 2013, we announced our intent to pursue a joint project to develop the Bluegrass Pipeline. This system is intended to transport producers’ NGLs from the Utica and Marcellus supply areas to the Gulf Coast petchem and export facilities as well as support the developing petchem complex in the northeastern United States.

Company Outlook

Our strategy is to provide large-scale energy infrastructure designed to maximize the opportunities created by the vast supply of natural gas, natural gas products, and crude oil that exists in North America. We seek to accomplish this through further developing our scale positions in current key markets and basins and entering new growth markets and basins where we can become the large-scale service provider. We will maintain a strong commitment to operational excellence and customer satisfaction. We believe that accomplishing these goals will position us to deliver an attractive return to our shareholders.

Fee-based businesses are a significant component of our portfolio. As we continue to transition to an overall business mix that is increasingly fee-based, the influence of commodity price fluctuations on our operating results and cash flows is expected to become somewhat less significant.

27

Management’s Discussion and Analysis (Continued)

In light of the above, our business plan for 2013 continues to reflect both significant capital investment and dividend growth. Our planned consolidated capital investments for 2013 total approximately $4.4 billion which we expect to fund primarily through cash on hand, cash flow from operations, and debt and equity issuances by WPZ. We also expect 20 percent growth in total 2013 dividends, which we expect to fund primarily with distributions received from WPZ. Our structure is designed to drive lower capital costs, enhance reliable access to capital markets, and create a greater ability to pursue development projects and acquisitions.

Potential risks and obstacles that could impact the execution of our plan include:

• General economic, financial markets, or industry downturn;

• Availability of capital;

• Lower than expected levels of cash flow from operations;

• Counterparty credit and performance risk;

• Decreased volumes from third parties served by our midstream business;

• Unexpected significant increases in capital expenditures or delays in capital project execution;

• Lower than anticipated energy commodity prices and margins;

• Changes in the political and regulatory environments;

• Physical damages to facilities, especially damage to offshore facilities by named windstorms.

We continue to address these risks through disciplined investment strategies, commodity hedging strategies, and maintaining at least $1 billion in consolidated liquidity from cash and cash equivalents and unused revolving credit facilities.

The following factors, among others, could impact our business in 2013.

Williams Partners

Commodity price changes

• We expect a decline in ethane prices to a level that will result in reduced ethane recoveries across much of our systems. We further expect lower propane prices and higher natural gas prices will result in overall total NGL margins being lower than the previous year. NGL price changes have historically tracked somewhat with changes in the price of crude oil, although NGL, crude, and natural gas prices are highly volatile, difficult to predict, and are often not highly correlated. NGL margins are highly dependent upon continued demand within the global economy. However, NGL products are currently the preferred feedstock for ethylene and propylene production, which has been shifting away from the more expensive crude-based feedstocks.

• While per-unit ethylene margins are volatile and highly dependent upon continued demand within the global economy, we believe that our average per-unit ethylene margins in 2013 will exceed 2012 levels, benefiting from continued higher ethylene prices and lower ethane and propane feedstock costs. Bolstered by abundant long-term domestic natural gas supplies, we expect to benefit from these dynamics in the broader global petrochemical markets because of our NGL-based olefins production.

Gathering, processing, and NGL sales volumes

• The growth of natural gas production supporting our gathering and processing volumes are impacted by producer drilling activities, which are influenced by commodity prices including natural gas, ethane, and propane prices. In addition, the natural decline rates in producing areas impact the amount of gas available for gathering and processing.

28

Management’s Discussion and Analysis (Continued)

• In Williams Partners onshore businesses, we anticipate significant growth compared to the prior year in our natural gas gathering volumes as our infrastructure grows to support drilling activities in the Marcellus Shale region. Based on less favorable producer economics in the western region, we expect a decrease in production and thus a lower supply of natural gas available to gather and process in 2013.

• We anticipate equity NGL volumes in 2013 to be lower than 2012 primarily due to periods when we expect it will not be economical to recover ethane. In addition, our equity NGL volumes will also be impacted by a change in a customer’s contract from percent-of-liquids to fee-based processing, with a portion of the fee representing a share of the associated NGL margins.

• In Williams Partners’ businesses in the Gulf Coast, we expect lower production handling and crude transportation volumes compared to 2012, as production flowing through our Devils Tower facility declines.

• We anticipate higher general and administrative, operating, and depreciation expense related to our growing operations in the Marcellus Shale area.

Olefin production volumes

We expect lower ethylene volumes in 2013 as compared to 2012 primarily due to major maintenance planned for 2013. With the completion of our Geismar expansion in the latter part of 2013, as discussed below, we expect growth in production volumes in the fourth quarter of 2013.

Eminence Storage Field leak

On December 28, 2010, we detected a leak in one of the seven underground natural gas storage caverns at our Eminence Storage Field in Mississippi. Due to the leak and related damage to the well at an adjacent cavern, both caverns are out of service. In addition, two other caverns at the field, which were constructed at or about the same time as those caverns, have experienced operating problems, and we have determined that they should also be retired. The event has not affected the performance of our obligations under our service agreements with our customers.

In September 2011, we filed an application with the FERC seeking authorization to abandon these four caverns. In February 2013, the FERC issued an order approving the abandonment. We estimate the total abandonment costs, which will be capital in nature, will be approximately $93 million, which is expected to be spent through the end of 2013. As of March 31, 2013, we have incurred approximately $71 million in cumulative abandonment costs. This estimate is subject to change as work progresses and additional information becomes known. Management considers these costs to be prudent costs incurred in the abandonment of these caverns and expects to recover these costs, net of any insurance proceeds, in future rate filings. To the extent available, the abandonment costs will be funded from the ARO Trust. (See Note 11 of Notes to Consolidated Financial Statements.)

Filing of rate cases

On August 31, 2012, Transco filed a general rate case with the FERC principally designed to recover increased costs and to comply with the terms of the settlement in its prior proceeding. The new rates became effective March 1, 2013, subject to refund and the outcome of a hearing. We expect that our new rates, although still subject to refund until the rate case is resolved, will contribute to a modest increase in revenue in 2013.

During the first quarter of 2012, Northwest Pipeline GP (Northwest Pipeline) filed a Stipulation and Settlement Agreement with the FERC for an increase in their rates. Northwest Pipeline received FERC approval during the second quarter of 2012. The new rates, which as filed are 7.4 percent higher than the formerly applicable rates, became effective January 1, 2013.

Williams NGL & Petchem Services

Commodity margin and volume changes

29

Management’s Discussion and Analysis (Continued)

While per-unit margins are volatile and highly dependent upon continued demand within the global economy, we believe that our gross commodity margins will be comparable or increase slightly over 2012 levels. This is primarily attributable to new ethane volumes expected to start mid-year 2013, from the offgas stream produced from the ethane recovery project. Canadian oil sands offgas continues to hold a distinct feedstock advantage over traditional crackers. We expect to benefit in the broader global petrochemical markets because of our strategic advantage in NGL and olefins production from oil sands.

Access Midstream Partners

Access Midstream Partners expects its annual distributions to unitholders will grow by approximately 15 percent in 2013 and 2014. We forecast that we will receive distributions of $88 million from our investment in Access Midstream Partners for 2013.

Considering the expected distribution growth from Access Midstream Partners, including the benefit we receive from our 50 percent indirect interest in Access GP and its incentive distribution rights, we expect to recognize growing equity earnings from our investment. Our earnings recognized, however, will be reduced by the noncash amortization of the difference between the cost of our investment and our underlying share of the net assets of Access Midstream Partners.

Expansion Projects

We expect to invest total capital in 2013 among our business segments as follows:

	Low	High
Segment:	(Millions)
Williams Partners	$3,245	$3,585
Williams NGL & Petchem Services	470	700

Our ongoing major expansion projects include the following:

Williams Partners

Northeast Connector

In April 2013, we filed an application with the FERC to expand our existing natural gas transmission system from southeastern Pennsylvania to the proposed Rockaway Delivery Lateral. We plan to place the project into service during the second half of 2014, and expect to increase capacity by 100 Mdth/d.

Rockaway Delivery Lateral

In January 2013, we filed an application with the FERC to construct a three-mile offshore lateral to a distribution system in New York. We plan to place the project into service during the second half of 2014, with an expected capacity of 647 Mdth/d.

Virginia Southside

In December 2012, we filed an application with the FERC to expand our existing natural gas transmission system from New Jersey to a proposed power station in Virginia and a delivery point in North Carolina. We plan to place the project into service in September 2015, which is expected to increase capacity by 270 Mdth/d.

30

Management’s Discussion and Analysis (Continued)

Northeast Supply Link

In November 2012, we received approval from the FERC to expand our existing natural gas transmission system from the Marcellus Shale production region on the Leidy Line to various delivery points in New York and New Jersey. We plan to place the project into service in November 2013, which is expected to increase capacity by an additional 250 Mdth/d.

Mid-South

In August 2011, we received approval from the FERC to upgrade compressor facilities and expand our existing natural gas transmission system from Alabama to markets as far north as North Carolina. We placed the first phase of the project into service in September 2012 which increased capacity by 95 Mdth/d. We plan to place the second phase of the project into service in June 2013, which is expected to increase capacity by an additional 130 Mdth/d.

Constitution Pipeline

In April 2012, we began the FERC pre-filing process for a new interstate gas pipeline project for our Constitution Pipeline. We currently own 51 percent of Constitution Pipeline with two other parties holding 25 percent and 24 percent, respectively. We will be the operator of Constitution Pipeline. The new 120-mile Constitution Pipeline will connect our gathering system in Susquehanna County, Pennsylvania, to the Iroquois Gas Transmission and Tennessee Gas Pipeline systems. We plan to place the project into service in March 2015, with an expected capacity of 650 Mdth/d. The pipeline is fully subscribed with two shippers. We expect to file a FERC application during the second quarter of 2013.

Marcellus Shale Expansions

• Expansion of our gathering infrastructure including compression and gathering pipelines in the Susquehanna Supply Hub in northeastern Pennsylvania as production in the Marcellus increases. The Susquehanna Supply Hub is expected to reach a natural gas take away capacity of 3 billion cubic feet per day (Bcf/d) by 2015, including capacity contributions from the Constitution Pipeline.

• Expansions currently under construction to our natural gas gathering system, processing facilities and fractionator in our Ohio Valley Midstream business of the Marcellus Shale including a third turbo-expander at our Fort Beeler facility which is expected to add 200 MMcf/d of processing capacity in the second quarter of 2013. By the end of 2013, we expect our first turbo-expander at our Oak Grove facility to add 200 MMcf/d of processing capacity and additional fractionation capacity at our Moundsville fractionators bringing the NGL handling capacity to approximately 43 Mbbls/d.

• Expansions to the Laurel Mountain Midstream, LLC (Laurel Mountain) gathering system infrastructure to increase the capacity to 830 MMcf/d by the end of 2015 through capital to be invested within this equity investment, also in the Marcellus Shale region.

• Construction of the Blue Racer Midstream joint project, an expansion to gathering and processing and the associated liquids infrastructure serving oil and gas producers in the Utica shale, primarily in Ohio and Northwest Pennsylvania through capital to be invested within our Caiman Energy II equity investment.

Gulfstar FPS™ Deepwater Project

We will design, construct, and install our Gulfstar FPS™, a spar-based floating production system that utilizes a standard design approach with a capacity of 60 Mbbls/d of oil, up to 200 MMcf/d of natural gas, and the capability to provide seawater injection services, as previously discussed.

Parachute

Due to a reduction in drilling in the Piceance basin during 2012 and early 2013, we have decided to delay the in-service date of our 350 MMcf/d cryogenic natural gas processing plant in Parachute that was planned for service in 2014. We are currently planning an in-service date in mid-2016. With the recent increase in natural gas prices, we will continue to monitor the situation to determine whether an earlier in-service date is warranted.

Geismar

An expansion of our Geismar olefins production facility is under way which is expected to increase the facility’s ethylene production capacity by 600 million pounds per year to a new annual capacity of 1.95 billion pounds. The additional capacity will be wholly owned by us and is expected to increase our share of the Geismar

31

Management’s Discussion and Analysis (Continued)

0production facility to over 88 percent. We expect to complete the expansion in the latter part of 2013.

Keathley Canyon Connector™

Our equity investee which we operate, Discovery Producer Services LLC (Discovery), plans to construct, own, and operate a new 215-mile, 20-inch deepwater lateral pipeline from a third-party floating production facility located in the Keathley Canyon production area in the central deepwater Gulf of Mexico. Discovery has signed long-term agreements with anchor customers for natural gas gathering and processing services for production from the Keathley Canyon and Green Canyon areas. The Keathley Canyon Connector™ lateral will originate from a third-party floating production facility in the southeast portion of the Keathley Canyon area and will connect to Discovery’s existing 30-inch offshore natural gas transmission system. The gas will be processed at Discovery’s Larose Plant and the NGLs will be further fractionated at Discovery’s Paradis Fractionator. The lateral pipeline is estimated to have the capacity to flow more than 400 MMcf/d and will accommodate the tie-in of other deepwater prospects. Pre-construction activities have begun; the pipeline is expected to be laid in 2013 and in service in mid-2014.

Overland Pass Pipeline Expansion

Through our equity investment in Overland Pass Pipeline Company LLC (OPPL), we expect to complete the construction of a pipeline connection and capacity expansions to increase the pipeline’s capacity to the maximum of 255 Mbbls/d in the second quarter of 2013. New volumes coming from the Bakken Shale in the Williston basin began to flow in April 2013.

Williams NGL & Petchem Services

Canadian PDH Facility

As previously discussed, we are building a propane dehydrogenation (PDH) facility in Alberta that will significantly increase production of polymer-grade propylene.

Ethane Recovery Project

The ethane recovery project, which is an expansion of our Canadian facilities, will allow us to recover ethane/ethylene mix from our operations that process offgas from the Alberta oil sands. We plan to modify our oil sands offgas extraction plant near Fort McMurray, Alberta, and construct a de-ethanizer at our Redwater fractionation facility. Our de-ethanizer is expected to initially process approximately 10,000 bbls/d of ethane/ethylene mix. We have signed a long-term contract to provide the ethane/ethylene mix to a third-party customer. We have begun construction and we expect to complete the expansions and begin producing ethane/ethylene mix during the second half of 2013.

NGL Infrastructure Expansion

We have signed a long-term agreement to provide gas processing to a second bitumen upgrader in Canada’s oils sands near Fort McMurray, Alberta. To support the new agreement, we plan to build a new liquids extraction plant, supporting facilities and an extension of the Boreal Pipeline to enable transportation of the NGL/olefins mixture to our Redwater facility. The NGL/olefins recovered are initially expected to be approximately 12,000 bbls/d by mid-2015. The NGL/olefins mixture will be fractionated at our Redwater facilities into an ethane/ethylene mix, propane, polymer grade propylene, normal butane, an alkylation feed and condensate. To mitigate the ethane price risk associated with this deal, we have a long-term supply agreement with a third party customer.

Gulf Coast Expansion

In November 2012, we acquired 10 liquids pipelines in the Gulf Coast region. The acquired pipelines will be combined with an organic build-out of several projects to expand our petrochemical services in that region. The

32

Management’s Discussion and Analysis (Continued)

projects include the construction and commissioning of pipeline systems capable of transporting various products in the Gulf Coast region. The projects are expected to be placed into service beginning in late 2014.

Other

Bluegrass Pipeline

As previously discussed, we intend to pursue a joint project to develop a pipeline that would transport producers’ NGLs from the Utica and Marcellus supply areas to the Gulf Coast petchem and export facilities as well as support the developing petchem complex in the northeastern United States. We expect related project development costs will increase in the near-term as development of this project progresses.

33

Management’s Discussion and Analysis (Continued)

Results of Operations

Consolidated Overview

The following table and discussion is a summary of our consolidated results of operations for the three months ended March 31, 2013, compared to the three months ended March 31, 2012. The results of operations by segment are discussed in further detail following this consolidated overview discussion.

	Three months ended March 31,
	2013			2012			$ Change*		% Change*
	(Millions)
Revenues:
Service revenues	$	706		$	677			+29		+4	%
Product sales		1,104			1,342			-238		-18	%
Total revenues		1,810			2,019
Costs and expenses:
Product costs		790			957			+167		+17	%
Operating and maintenance expenses		260			230			-30		-13	%
Depreciation and amortization expenses		210			168			-42		-25	%
Selling, general, and administrative expenses		132			129			-3		-2	%
Other (income) expense – net		(8	)		8			+16		NM
Total costs and expenses		1,384			1,492
Operating income (loss)		426			527
Equity earnings (losses)		18			31			-13		-42	%
Interest expense		(128	)		(131	)		+3		+2	%
Other investing income – net		13			69			-56		-81	%
Other income (expense) – net		(2	)		(4	)		+2		+50	%
Income (loss) from continuing operations before income taxes		327			492
Provision (benefit) for income taxes		96			133			+37		+28	%
Income (loss) from continuing operations		231			359
Income (loss) from discontinued operations		(1	)		136			-137		NM
Net income (loss)		230			495
Less: Net income attributable to noncontrolling interests		69			72			+3		+4	%
Net income (loss) attributable to The Williams Companies, Inc.	$	161		$	423

* + = Favorable change; - = Unfavorable change; NM = A percentage calculation is not meaningful due to a change in signs, a zero-value denominator, or a percentage change greater than 200.

Three months ended March 31, 2013 vs. three months ended March 31, 2012

The increase in service revenues is primarily due to Williams Partners’ higher fee revenues driven by higher gathering volumes associated with the businesses acquired in the Laser Acquisition in February 2012 and the Caiman Acquisition in April 2012. Additionally, natural gas transportation revenues at Williams Partners increased from expansion projects placed into service in 2012 and new rates effective during first-quarter 2013. Partially offsetting these increases are Williams Partners’ lower gathering and processing fee revenues primarily in the Piceance basin due to severe winter weather conditions which prevented producers from delivering gas and resulted in lower production.

The decrease in product sales is primarily due to lower NGL production revenues at Williams Partners resulting from lower volumes primarily driven by reduced ethane recoveries and decreases in average NGL per-unit sales

34

Management’s Discussion and Analysis (Continued)

prices. In addition, NGL, natural gas, and crude oil marketing revenues at Williams Partners decreased primarily due to lower volumes and decreases in energy commodity prices. Williams Partners’ olefin production revenues also decreased primarily due to lower volumes, partially offset by higher per-unit sales prices.

The decrease in product costs is primarily due to Williams Partner’s lower NGL, natural gas, and crude oil marketing purchases resulting from lower volumes and decreases in energy commodity prices. In addition, olefin feedstock costs at Williams Partners decreased reflecting a decrease in average per-unit feedstock costs and lower sales volumes. Williams Partners’ costs associated with the production of NGLs also decreased primarily resulting from lower volumes, partially offset by an increase in average natural gas prices.

The increase in operating and maintenance expenses is primarily associated with Williams Partners’ businesses acquired in 2012 and the subsequent growth in these operations.

The increase in depreciation and amortization expenses reflects a full quarter of depreciation expense in 2013 associated with Williams Partners’ businesses acquired in 2012 and an increase in depreciation for certain of Transco’s Eminence storage assets as approved by the FERC in the related abandonment filing.

The favorable change in other (income) expense – net within operating income (loss) includes an increase in regulatory credits to defer ARO costs associated with the previously described increased depreciation of Transco’s Eminence storage assets.

The unfavorable change in operating income (loss) generally reflects lower NGL production margins primarily due to lower NGL volumes and unfavorable energy commodity price changes and higher operating costs, partially offset by higher olefin production margins and increased fee revenues.

The unfavorable change in equity earnings (losses) is primarily due to lower equity earnings from Discovery driven by lower NGL margins.

Interest expense decreased due to an increase in interest capitalized related to construction projects primarily at Williams Partners, partially offset by an increase in interest incurred primarily due to an increase in borrowings.

The unfavorable change in other investing income – net is primarily due to the absence of $63 million of income recognized in 2012, including $10 million of interest income, at Other related to the 2010 sale of our interest in Accroven SRL. This is partially offset by $13 million of interest income recorded in the first quarter of 2013 associated with a receivable related to the sale of certain former Venezuela assets. (See Note 4 of Notes to Consolidated Financial Statements.)

Provision (benefit) for income taxes changed favorably primarily due to lower pre-tax income. See Note 5 of Notes to Consolidated Financial Statements for a discussion of the effective tax rates compared to the federal statutory rate for both periods.

Income (loss) from discontinued operations in 2012 primarily includes a gain on reconsolidation following the sale of certain of our former Venezuela operations. See Note 3 of Notes to Consolidated Financial Statements for a discussion of the items in income (loss) from discontinued operations.

The slightly favorable change in net income attributable to noncontrolling interests primarily reflects higher income allocated to the general partner associated with incentive distribution rights, as well as lower operating results at WPZ, partially offset by our decreased percentage of limited partner ownership of WPZ, which was 66 percent at March 31, 2013, compared to 70 percent at March 31, 2012.

35

Management’s Discussion and Analysis (Continued)

Period-Over-Period Operating Results — Segments

Williams Partners

	Three months ended March 31,
	2013		2012
	(Millions)
Segment revenues	$	1,756	$	1,968
Segment profit	$	456	$	551

Three months ended March 31, 2013 vs. three months ended March 31, 2012

The decrease in segment revenues includes:

• A $142 million decrease in revenues from our equity NGLs primarily reflecting a decrease of $95 million due to lower volumes and a $47 million decrease associated with 19 percent lower average non-ethane per-unit sales prices and 68 percent lower average ethane per-unit sales prices. Equity ethane sales volumes are 87 percent lower driven by reduced ethane recoveries, as previously mentioned, and equity non-ethane volumes are 7 percent lower primarily due to periods of severe winter weather conditions that affected our western onshore operations that prevented producers from delivering gas and a change in a customer’s contract from percent-of-liquids to fee-based processing.

• NGL, natural gas, and crude oil marketing revenues are $106 million lower primarily associated with lower volumes and decreases in energy commodity prices, partially offset by higher non-ethane volumes. The changes in marketing revenues are more than offset by similar changes in marketing purchases.

• An $8 million decrease in olefin sales primarily due to lower ethylene volumes related to changes in inventory management, partially offset by higher ethylene prices.

• A $28 million increase in fee revenues primarily due to $39 million higher gathering volumes associated with the businesses acquired in the Laser and Caiman Acquisitions in February and April 2012, respectively. Additionally, natural gas transportation revenues increased from expansion projects placed into service in 2012 and new rates effective in first-quarter 2013. Partially offsetting these increases is a $20 million decrease in gathering and processing revenues primarily due to severe winter weather conditions that affected our western onshore operations which prevented producers from delivering gas that resulted in lower production primarily in the Piceance basin.

• A $16 million increase in system management gas sales from our gas pipeline businesses (offset in segment costs and expenses).

The decrease in segment costs and expenses of $129 million includes:

• A $116 million decrease in NGL, natural gas, and crude oil marketing purchases primarily due to lower volumes and decreases in energy commodity prices, partially offset by higher non-ethane volumes.

• A $52 million decrease in olefin feedstock costs primarily due to lower ethylene feedstock costs, including $31 million associated with 46 percent lower average per-unit feedstock costs and $11 million associated with 13 percent lower sales volumes, and $10 million lower feedstock costs for other products and plant fuel.

• A $21 million decrease in costs associated with our equity NGLs primarily due to lower volumes, partially offset by a 21 percent increase in average natural gas prices.

36

Management’s Discussion and Analysis (Continued)

• A $59 million increase in operating costs including higher operating and maintenance expenses and depreciation and amortization expenses primarily associated with the businesses acquired in the Laser and Caiman Acquisitions in February and April 2012, respectively and the subsequent growth in these operations. The increase also reflects higher depreciation and amortization expenses associated with certain of Transco’s Eminence storage assets as approved by the FERC in the related abandonment filing.

• A $15 million increase in system management gas costs from our gas pipeline businesses (offset in segment revenues).

• A $12 million favorable change in other (income) expense – net, primarily attributable to an increase in regulatory credits to defer ARO costs associated with the previously described increase in depreciation of certain of Transco’s Eminence storage assets.

The decrease in segment profit includes:

• A $121 million decrease in NGL margins driven primarily by lower NGL volumes, lower NGL prices and higher natural gas prices.

• A $59 million increase in operating costs as previously discussed.

• A $12 million decrease in equity earnings primarily due to $8 million lower equity earnings from Discovery, driven by lower NGL margins.

• A $44 million increase in olefin product margins including $39 million higher ethylene product margins primarily due to 46 percent lower average per-unit feedstock prices and 12 percent higher per-unit ethylene prices, partially offset by 13 percent lower volumes sold.

• A $28 million increase in fee revenues as previously discussed.

• A $12 million favorable change in other (income) expense – net as previously discussed.

• A $10 million increase in margins related to the marketing of NGLs, natural gas, and crude oil.

Williams NGL & Petchem Services

	Three months ended March 31,
	2013		2012
	(Millions)
Segment revenues	$	90	$	89
Segment profit	$	36	$	40

Three months ended March 31, 2013 vs. three months ended March 31, 2012

Segment profit decreased primarily due to increased operating and maintenance costs, including depreciation related to the Boreal pipeline, which was placed into service June 2012. Product margins remained consistent due to offsetting price and volume variances and fee-based revenues were slightly higher. NGL product margins experienced a slight decline primarily due to 22 percent lower average per-unit margins, substantially offset by 17 percent higher sales volumes; whereas propylene product margins were slightly higher primarily due to 25 percent higher average per-unit margins, substantially offset by 13 percent lower sales volumes.

37

Management’s Discussion and Analysis (Continued)

Access Midstream Partners

	Three months ended March 31,
	2013		2012
	(Millions)
Segment profit	$	-	$	-

Three months ended March 31, 2013 vs. three months ended March 31, 2012

Segment profit in the first quarter of 2013 included $17 million of equity earnings recognized from Access Midstream Partners, offset by $17 million noncash amortization of the difference between the cost of our investment and our underlying share of the net assets of Access Midstream Partners. During the first-quarter 2013, we received a regular quarterly distribution of $20 million from Access Midstream Partners.

Other

	Three months ended March 31,
	2013			2012
	(Millions)
Segment revenues	$	7		$	6
Segment profit (loss)	$	(5	)	$	59

Three months ended March 31, 2013 vs. three months ended March 31, 2012

The unfavorable change in segment profit (loss) is primarily due to the absence of the gain of $53 million recognized in 2012 related to the 2010 sale of our interest in Accroven SRL. As part of a settlement regarding certain Venezuelan assets in the first quarter of 2012, we received payment for all outstanding balances due from this sale. (See Note 4 of Notes to Consolidated Financial Statements.) The unfavorable change also reflects $6 million of project development costs incurred in 2013.

38

Management’s Discussion and Analysis (Continued)

Management’s Discussion and Analysis of Financial Condition and Liquidity

Outlook

We seek to manage our businesses with a focus on applying conservative financial policy and maintaining investment-grade credit metrics. Our plan for 2013 reflects our ongoing transition to an overall business mix that is increasingly fee-based. Although our cash flows are impacted by fluctuations in energy commodity prices, that impact is somewhat mitigated by certain of our cash flow streams that are not directly impacted by short-term commodity price movements, including:

• Firm demand and capacity reservation transportation revenues under long-term contracts;

• Fee-based revenues from certain gathering and processing services.

We believe we have, or have access to, the financial resources and liquidity necessary to meet our requirements for working capital, capital and investment expenditures, dividends and distributions, debt service payments, and tax payments while maintaining a sufficient level of liquidity. In particular, we note the following for 2013:

• We expect capital and investment expenditures to total between $4.075 billion and $4.715 billion in 2013. Of this total, maintenance capital expenditures, which are generally considered nondiscretionary and include expenditures to meet legal and regulatory requirements, to maintain and/or extend the operating capacity and useful lives of our assets, and to complete certain well connections, are expected to total between $360 million and $430 million. Expansion capital expenditures, which are generally more discretionary to fund projects in order to grow our business are expected to total between $3.715 billion and $4.285 billion. See Company Outlook – Expansion Projects, Williams Partners and Williams NGL & Petchem Services for discussions describing the general nature of these expenditures. In addition, we retain the flexibility to adjust our planned levels of capital and investment expenditures in response to changes in economic conditions or business opportunities.

• We expect to pay total annual cash dividends of approximately $1.44 per common share, an increase of 20 percent over 2012 levels.

• We expect to fund working capital requirements, capital and investment expenditures, debt service payments, dividends and distributions and tax payments primarily through cash flow from operations, cash and cash equivalents on hand, issuances of Williams and WPZ debt and/or equity securities, and utilization of our revolver and WPZ’s revolver and/or commercial paper. Based on a range of market assumptions, we currently estimate our cash flow from operations will be between $2 billion and $2.2 billion in 2013.

• We expect to maintain consolidated liquidity (which includes liquidity at WPZ) of at least $1 billion from cash and cash equivalents and unused revolver capacity.

Liquidity

Based on our forecasted levels of cash flow from operations and other sources of liquidity, we expect to have sufficient liquidity to manage our businesses in 2013. Our internal and external sources of consolidated liquidity include cash generated from our operations, cash and cash equivalents on hand, cash proceeds from WPZ’s offerings of common units, our revolver and WPZ’s revolver and/or commercial paper. Additional sources of liquidity, if needed, include bank financings, proceeds from the issuance of debt and/or equity securities, and proceeds from asset sales. These sources are available to us at the parent level and are expected to be available to certain of our subsidiaries, particularly equity and debt issuances from WPZ. WPZ is expected to be self-funding through its cash flows from operations, use of its revolver and/or commercial paper, and its access to capital markets. WPZ makes cash distributions to us in accordance with the partnership agreement, which considers our level of ownership and incentive distribution rights.

39

Management’s Discussion and Analysis (Continued)

Potential risks associated with our planned levels of liquidity and the planned capital and investment expenditures discussed above include:

• Limited availability of capital due to a change in our financial condition, interest rates, market or industry conditions;

• Sustained reductions in energy commodity prices and margins from the range of current expectations;

• Significant physical damage to facilities, especially damage to WPZ’s offshore facilities by named windstorms;

• Unexpected significant increases in capital expenditures or delays in capital project execution;

• Lower than expected distributions, including incentive distribution rights, from WPZ. WPZ’s liquidity could also be impacted by a lack of adequate access to capital markets to fund its growth.

			March 31, 2013
Available Liquidity	Expiration		WPZ		WMB			Total
					(Millions)
Cash and cash equivalents			$	79	$	623	(1)	$	702
Capacity available under our $900 million revolver (2)		June 3, 2016				900			900
Capacity available to WPZ under its $2.4 billion revolver (3)		June 3, 2016		2,150					2,150
			$	2,229	$	1,523		$	3,752

(1) Includes $508 million of cash and cash equivalents held primarily by certain international entities, that we intend to utilize to fund growth in our Canadian midstream operations and therefore, is not considered available for general corporate purposes. The remainder of our cash and cash equivalents is primarily held in government-backed instruments.

(2) At March 31, 2013, we are in compliance with the financial covenants associated with this revolver.

(3) At March 31, 2013, WPZ is in compliance with the financial covenants associated with the WPZ revolver. The WPZ revolver is only available to WPZ, Transco and Northwest Pipeline as co-borrowers.

In addition to the revolvers listed above, we have issued letters of credit totaling $17 million as of March 31, 2013 under certain bilateral bank agreements.

Shelf Registration

In April 2013, WPZ filed a shelf registration statement for the offer and sale from time to time of common units representing limited partner interests in WPZ having an aggregate offering price of up to $600 million. These sales will be made over a period of time and from time to time in transactions at prices which are market prices prevailing at the time of sale, prices related to market price or at negotiated prices. Such sales will be made pursuant to an equity distribution agreement between WPZ and certain banks who may act as sales agents or purchase for their own accounts as principals.

Commercial Paper

In March 2013, WPZ initiated a commercial paper program. The program allows a maximum outstanding amount at any time of $2 billion of unsecured commercial paper notes. The maturities of the commercial paper notes will vary but may not exceed 397 days from the date of issuance. The commercial paper notes will be sold under customary terms in the commercial paper market

40

Management’s Discussion and Analysis (Continued)

and will be issued at a discount from par, or, alternatively, will be sold at par and bear varying interest rates on a fixed or floating basis. Proceeds from these notes are expected to be used to fund planned capital expenditures and for other general partnership purposes. WPZ has not yet issued any notes under this commercial paper program. In managing our available liquidity, we do not expect a maximum outstanding amount under this program in excess of the capacity available under WPZ’s revolver.

Equity Offering

In March 2013, WPZ completed an equity issuance of 14,250,000 common units representing limited partner interests, including 3,000,000 common units sold to us in a private placement. Subsequently, the underwriters exercised their option to purchase 1,687,500 common units. The net proceeds of approximately $760 million to WPZ, including $143 million received from us on the private placement sale, were used to repay amounts outstanding under the WPZ revolver.

Credit Ratings

Our ability to borrow money is impacted by our credit ratings and the credit ratings of WPZ. The current ratings are as follows:

	Rating Agency	Outlook	Senior Unsecured Debt Rating	Corporate Credit Rating
Williams:
	Standard & Poor’s	Stable	BBB-	BBB
	Moody’s Investors Service	Stable	Baa3	N/A
	Fitch Ratings	Stable	BBB-	N/A
Williams Partners:
	Standard & Poor’s	Stable	BBB	BBB
	Moody’s Investors Service	Stable	Baa2	N/A
	Fitch Ratings	Positive	BBB-	N/A

With respect to Standard and Poor’s, a rating of “BBB” or above indicates an investment grade rating. A rating below “BBB” indicates that the security has significant speculative characteristics. A “BB” rating indicates that Standard and Poor’s believes the issuer has the capacity to meet its financial commitment on the obligation, but adverse business conditions could lead to insufficient ability to meet financial commitments. Standard and Poor’s may modify its ratings with a “+” or a “-” sign to show the obligor’s relative standing within a major rating category.

With respect to Moody’s, a rating of “Baa” or above indicates an investment grade rating. A rating below “Baa” is considered to have speculative elements. The “1”, “2”, and “3” modifiers show the relative standing within a major category. A “1” indicates that an obligation ranks in the higher end of the broad rating category, “2” indicates a mid-range ranking, and “3” indicates a ranking at the lower end of the category.

With respect to Fitch, a rating of “BBB” or above indicates an investment grade rating. A rating below “BBB” is considered speculative grade. Fitch may add a “+” or a “-” sign to show the obligor’s relative standing within a major rating category.

Credit rating agencies perform independent analyses when assigning credit ratings. No assurance can be given that the credit rating agencies will continue to assign us investment grade ratings even if we meet or exceed their current criteria for investment grade ratios. A downgrade of our credit rating might increase our future cost of borrowing and would require us to post additional collateral with third parties, negatively impacting our available liquidity. As of March 31, 2013, we estimate that a downgrade to a rating below investment grade for us or WPZ

41

Management’s Discussion and Analysis (Continued)

could require us to post up to $18 million or $335 million, respectively, in additional collateral with third parties.

Sources (Uses) of Cash

	Three months ended March 31,
	2013			2012
	(Millions)
Net cash provided (used) by:
Operating activities	$	495		$	434
Financing activities		176			268
Investing activities		(808	)		(491	)
Increase (decrease) in cash and cash equivalents	$	(137	)	$	211

Operating activities

The increase in net cash provided by operating activities is attributable to various items including $20 million of distributions from our investment in Access Midstream Partners acquired in December 2012, partially offset by lower operating results.

Financing activities

Significant transactions include:

• $617 million in 2013 and $490 million in 2012 received from WPZ’s equity offerings;

• $770 million received in 2013 from WPZ’s revolver borrowings;

• $895 million paid on WPZ’s revolver borrowings in 2013;

• $231 million in 2013 and $154 million in 2012 paid for quarterly dividends on common stock;

• $105 million in 2013 and $61 million in 2012 paid for dividends and distributions to noncontrolling interests.

Investing activities

Significant transactions include:

• Capital expenditures of $713 million and $329 million for 2013 and 2012, respectively;

• $325 million paid, net of cash acquired in the transaction, for WPZ’s Laser Acquisition in February 2012;

• $121 million received from the reconsolidation of the Wilpro entities in 2012. (See Note 3 of our Notes to Consolidated Financial Statements.) This cash is only considered available for use in our international operations.

Off-Balance Sheet Financing Arrangements and Guarantees of Debt or Other Commitments

We have various other guarantees and commitments which are disclosed in Notes 11 and 12 of Notes to Consolidated Financial Statements. We do not believe these guarantees or the possible fulfillment of them will prevent us from meeting our liquidity needs.

42

Item 3

Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

Our current interest rate risk exposure is related primarily to our debt portfolio and has not materially changed during the first three months of 2013.

Foreign Currency Risk

Net assets of our consolidated foreign operations, whose functional currency is the local currency located primarily in Canada, were approximately $912 million and $899 million at March 31, 2013 and December 31, 2012, respectively. These investments have the potential to impact our financial position due to fluctuations in these local currencies arising from the process of translating the local functional currency into the U.S. dollar. As an example, a 20 percent change in the respective functional currencies against the U.S. dollar would have changed total stockholders’ equity by approximately $182 million at March 31, 2013.

43

Item 4

Controls and Procedures

Our management, including our Chief Executive Officer and Chief Financial Officer, does not expect that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act) (Disclosure Controls) or our internal controls over financial reporting (Internal Controls) will prevent all errors and all fraud. A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected. We monitor our Disclosure Controls and Internal Controls and make modifications as necessary; our intent in this regard is that the Disclosure Controls and Internal Controls will be modified as systems change and conditions warrant.

Evaluation of Disclosure Controls and Procedures

An evaluation of the effectiveness of the design and operation of our Disclosure Controls was performed as of the end of the period covered by this report. This evaluation was performed under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that these Disclosure Controls are effective at a reasonable assurance level.

First-Quarter 2013 Changes in Internal Controls

There have been no changes during the first quarter of 2013 that have materially affected, or are reasonably likely to materially affect, our Internal Controls.

44

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

Environmental

Certain reportable legal proceedings involving governmental authorities under federal, state and local laws regulating the discharge of materials into the environment are described below. While it is not possible for us to predict the final outcome of the proceedings which are still pending, we do not anticipate a material effect on our consolidated financial position if we receive an unfavorable outcome in any one or more of such proceedings.

In September 2007, the EPA requested, and Transco later provided, information regarding natural gas compressor stations in the states of Mississippi and Alabama as part of the EPA’s investigation of Transco’s compliance with the Clean Air Act. On March 28, 2008, the EPA issued notices of violation alleging violations of Clean Air Act requirements at these compressor stations. Transco met with the EPA in May 2008 and submitted a response denying the allegations in June 2008. In May 2011, Transco provided additional information to the EPA pertaining to these compressor stations in response to a request they had made in February 2011. In August 2010, the EPA requested, and Transco provided, similar information for a compressor station in Maryland.

The New Mexico Environment Department’s Air Quality Bureau (NMED) issued a Notice of Violation to Williams Four Corners LLC (Four Corners) on October 23, 2012, as revised on February 7, 2013, for the El Cedro Gas Treating Plant related to the plant’s use of a standby generator and the timing of periodic testing. Settlement negotiations with the NMED to resolve the alleged violations are ongoing, with the NMED offering on April 5, 2013 to settle for $162,711.

On January 18, 2013, the NMED issued a Notice of Violation to Four Corners relating to permitting issues for condensate storage tanks at the La Jara Compressor Station. Williams has been in discussions with the NMED about such permitting issues since early 2011. Settlement negotiations to resolve the issues are ongoing, with the NMED offering on April 18, 2013 to settle for $129,978.

Other

The additional information called for by this item is provided in Note 12 of the Notes to Consolidated Financial Statements included under Part I, Item 1. Financial Statements of this report, which information is incorporated by reference into this item.

45

Item 6. Exhibits

Exhibit No.		Description
Exhibit 3.1	—	Restated Certificate of Incorporation (filed on May 26, 2010, as Exhibit 3.1 to the Company’s Current Report on Form 8-K) and incorporated herein by reference.
Exhibit 3.2	—	Restated By-Laws (filed on May 26, 2010, as Exhibit 3.2 to the Company’s Current Report on Form 8-K) and incorporated herein by reference.
Exhibit 10.1	—	Amendments Nos. 2, 3, 4, and 5 to Contribution Agreement between Caiman Energy, LLC and Williams Partners L.P. (filed on May 8, 2013 as Exhibit 10.1 to Williams Partners L.P.’s quarterly report on Form 10-Q (File No. 001-32599)) and incorporated herein by reference.
Exhibit 10.2	—	Form of Commercial Paper Dealer Agreement, dated as of March 12, 2013, between Williams Partners L.P., as Issuer, and the Dealer party thereto (filed on March 18, 2013 as Exhibit 10.1 to Williams Partners L.P.’s current report on Form 8-K (File No. 001-32599)) and incorporated herein by reference.
*Exhibit 12	—	Computation of Ratio of Earnings to Fixed Charges.
*Exhibit 31.1	—	Certification of Chief Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended, and Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*Exhibit 31.2	—	Certification of Chief Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended, and Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
**Exhibit 32	—	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
*Exhibit 101.INS	—	XBRL Instance Document.
*Exhibit 101.SCH	—	XBRL Taxonomy Extension Schema.
*Exhibit 101.CAL	—	XBRL Taxonomy Extension Calculation Linkbase.
*Exhibit 101.DEF	—	XBRL Taxonomy Extension Definition Linkbase.
*Exhibit 101.LAB	—	XBRL Taxonomy Extension Label Linkbase.
*Exhibit 101.PRE	—	XBRL Taxonomy Extension Presentation Linkbase.

46

* Filed herewith.

** Furnished herewith.

47

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

THE WILLIAMS COMPANIES, INC.

(Registrant)

/s/  TED T. TIMMERMANS

Ted T. Timmermans

Vice President, Controller and Chief Accounting Officer (Duly Authorized Officer and Principal Accounting Officer)

May 8, 2013

EXHIBIT INDEX

Exhibit No.		Description
Exhibit 3.1	—	Restated Certificate of Incorporation (filed on May 26, 2010, as Exhibit 3.1 to the Company’s Current Report on Form 8-K) and incorporated herein by reference.
Exhibit 3.2	—	Restated By-Laws (filed on May 26, 2010, as Exhibit 3.2 to the Company’s Current Report on Form 8-K) and incorporated herein by reference.
Exhibit 10.1	—	Amendments Nos. 2, 3, 4, and 5 to Contribution Agreement between Caiman Energy, LLC and Williams Partners L.P. (filed on May 8, 2013 as Exhibit 10.1 to Williams Partners L.P.’s quarterly report on Form 10-Q (File No. 001-32599)) and incorporated herein by reference.
Exhibit 10.2	—	Form of Commercial Paper Dealer Agreement, dated as of March 12, 2013, between Williams Partners L.P., as Issuer, and the Dealer party thereto (filed on March 18, 2013 as Exhibit 10.1 to Williams Partners L.P.’s current report on Form 8-K (File No. 001-32599)) and incorporated herein by reference.
* Exhibit 12	—	Computation of Ratio of Earnings to Fixed Charges.
* Exhibit 31.1	—	Certification of Chief Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended, and Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
*Exhibit 31.2	—	Certification of Chief Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended, and Item 601(b)(31) of Regulation S-K, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
**Exhibit 32	—	Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
*Exhibit 101.INS	—	XBRL Instance Document
*Exhibit 101.SCH	—	XBRL Taxonomy Extension Schema
*Exhibit 101.CAL	—	XBRL Taxonomy Extension Calculation Linkbase
*Exhibit 101.DEF	—	XBRL Taxonomy Extension Definition Linkbase
*Exhibit 101.LAB	—	XBRL Taxonomy Extension Label Linkbase
*Exhibit 101.PRE	—	XBRL Taxonomy Extension Presentation Linkbase

* Filed herewith.

** Furnished herewith.

EX-12

Exhibit 12

The Williams Companies, Inc.

Computation of Ratio of Earnings to Fixed Charges

	Three months ended
	March 31, 2013
	(Millions)
Earnings:
Income from continuing operations before income taxes and noncontrolling interests	$	327
Less: Equity earnings, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		(3	)
Income from continuing operations before income taxes, equity earnings, and noncontrolling interests		324
Add:
Fixed charges:
Interest incurred, including proportionate share from 50% owned investees and unconsolidated majority-owned investees (a)		161
Rental expense representative of interest factor		3
Total fixed charges		164
Distributed income of equity method investees, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		27
Less:
Interest capitalized		(24	)
Total earnings as adjusted	$	491
Fixed charges	$	164
Ratio of earnings to fixed charges		2.99

(a) Does not include interest related to income taxes, including interest related to liabilities for uncertain tax positions, which is included in provision (benefit) for income taxes in our Consolidated Statement of Income.

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Alan S. Armstrong, certify that:

1. I have reviewed this quarterly report on Form 10-Q of The Williams Companies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2013

/s/ Alan S. Armstrong

Alan S. Armstrong

President and Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Donald R. Chappel, certify that:

1. I have reviewed this quarterly report on Form 10-Q of The Williams Companies, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: May 8, 2013

/s/ Donald R. Chappel

Donald R. Chappel

Senior Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of The Williams Companies, Inc. (the “Company”) on Form 10-Q for the period ending March 31, 2013, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, in his capacity as an officer of the Company, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that to his knowledge:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Alan S. Armstrong

Alan S. Armstrong

President and Chief Executive Officer

May 8, 2013

/s/ Donald R. Chappel

Donald R. Chappel

Chief Financial Officer

May 8, 2013

A signed original of this written statement required by Section 906 has been provided to, and will be retained by, the Company and furnished to the Securities and Exchange Commission or its staff upon request.

The foregoing certification is being furnished to the Securities and Exchange Commission as an exhibit to the Report and shall not be considered filed as part of the Report.

XML

Earnings (Loss) Per Common Share from Continuing Operations (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings (loss) per common share from continuing operations
Income (loss) from continuing operations attributable to The Williams Companies, Inc. available to common stockholders for basic and diluted earnings (loss) per common share	$ 162	$ 287
Basic weighted-average shares	682,052,000	593,231,000
Diluted weighted-average shares	687,143,000	600,520,000
Effect of dilutive securities:
Incremental dilutive shares, Convertible debt	184,000
Earnings (loss) per common share from continuing operations:
Basic	$ 0.24	$ 0.48
Diluted	$ 0.23	$ 0.47
Stock options excluded
Quarter Weighted Average Market Price	$ 34.89	$ 29.33
Nonvested restricted stock units [Member]
Effect of dilutive securities:
Incremental common shares attributable to share-based payment arrangements under effects of dilutive securities item	2,720,000	3,564,000
Stock options [Member]
Effect of dilutive securities:
Incremental common shares attributable to share-based payment arrangements under effects of dilutive securities item	2,187,000	2,938,000
Convertible debentures [Member]
Effect of dilutive securities:
Incremental dilutive shares, Convertible debt		787,000
Out of the money options [Member]
Stock options excluded
Weighted-average exercise price of options excluded		$ 29.72
Exercise price ranges of options excluded, minimum		$ 29.34
Exercise price ranges of options excluded, maximum		$ 29.72
Earnings (loss) per common share from continuing operations (Textuals) [Abstract]
Number of weighted-average shares excluded from computation of diluted earnings per common share	0	900,000
In money options [Member]
Earnings (loss) per common share from continuing operations (Textuals) [Abstract]
Number of weighted-average shares excluded from computation of diluted earnings per common share		1,100,000

XML

Derivative Instruments and Concentration of Credit Risk (Details 4) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Receivables by product or service [Line Items]
Receivables by product or service	$ 760	$ 688

XML

Debt Leases and Banking Arrangements (Details 1) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
$ 900 million unsecured credit facility
Line of Credit Facility [Abstract]
Letters of Credit Outstanding, Amount	$ 0
Line of Credit Facility, Maximum Borrowing Capacity	900
Bilateral bank agreements for letters of credit
Line of Credit Facility [Abstract]
Line of Credit Facility, Amount Outstanding	17
$2.4 billion WPZ unsecured credit facility
Line of Credit Facility [Abstract]
Letters of Credit Outstanding, Amount	0
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,400

XML

Contingent Liabilities and Commitments (Details Textual) (USD $) In Millions, unless otherwise specified								1 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Gas Pipeline	Mar. 31, 2013 Former Operations	Mar. 31, 2013 Natural gas underground storage facilities	Dec. 31, 2011 Gulf Liquids	Dec. 31, 2008 Gulf Liquids	Dec. 31, 2006 Gulf Liquids	Jan. 28, 2008 Gulf Liquids Gulsby-Bay	Jan. 28, 2008 Gulf Liquids Gulsby	Feb. 28, 2011 Pending or Threatened Litigation
Loss Contingencies [Line Items]
Accrued Environmental Loss liabilities	$ 49	$ 9	$ 29	$ 11
Estimated exposure for actual damages							68
Potential interest in addition to actual damages							20
Possible utlimate judgement in excess of accrual							199
Litigation award against Gulf Liquids, Damages								4	11
Loss contingency accrual reduction					33	43
Loss contingency accrued interest reduction					14	11
Assertion of Counterclaim										200
Loss Contingency, Range of Possible Loss	$ 32

XML

Accrued Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Accrued Liabilities [Abstract]
Total accrued liabilities	$ 624	$ 628

XML

Variable Interest Entities (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended									3 Months Ended
	Mar. 31, 2013 Laurel Mountain [Member]	Mar. 31, 2013 Discovery [Member]	Mar. 31, 2013 Gulfstar One [Member]	Apr. 01, 2013 Gulfstar One [Member] Subsequent Event [Member]	Mar. 31, 2013 Gulfstar One [Member] Property Plant And Equipment [Member]	Dec. 31, 2012 Gulfstar One [Member] Property Plant And Equipment [Member]	Mar. 31, 2013 Gulfstar One [Member] Accounts Payable [Member]	Dec. 31, 2012 Gulfstar One [Member] Accounts Payable [Member]	Mar. 31, 2013 Gulfstar One [Member] Accrued Liabilities [Member]	Dec. 31, 2012 Gulfstar One [Member] Accrued Liabilities [Member]	Mar. 31, 2013 Gulfstar One [Member] Other Noncurrent Liabilities [Member]	Dec. 31, 2012 Gulfstar One [Member] Other Noncurrent Liabilities [Member]	Mar. 31, 2013 Constitution Pipeline Company Llc [Member]	Mar. 31, 2013 Constitution Pipeline Company Llc [Member] Cash and Cash Equivalents [Member]	Dec. 31, 2012 Constitution Pipeline Company Llc [Member] Cash and Cash Equivalents [Member]	Mar. 31, 2013 Constitution Pipeline Company Llc [Member] Property Plant And Equipment [Member]	Dec. 31, 2012 Constitution Pipeline Company Llc [Member] Property Plant And Equipment [Member]	Mar. 31, 2013 Constitution Pipeline Company Llc [Member] Accounts Payable [Member]	Dec. 31, 2012 Constitution Pipeline Company Llc [Member] Accounts Payable [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity Ownership Percentage													51.00%
Estimated remaining construction costs			$ 450										$ 680
Proceeds from Partnership Contribution				187
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				49.00%
Duration Of Adjustment Period				60 days
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract]
Variable Interest Entity, Consolidated, Carrying Amount, Assets					572	532								7	8	31	24
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities							88	124	1	0	109	109						5	4
Equity Method Investments	$ 483	$ 357

XML

Segment Disclosures (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Segment revenues:
Total revenues	$ 1,810	$ 2,019
Segment profit (loss)	487	650
Equity earnings (losses)	18	31
Income (loss) from investments	(1)	52
General corporate expenses	(44)	(40)
Operating income (loss)	426	527
Other financial information:
Depreciation and amortization expenses	210	168
Total assets and equity method investments by reporting segment
Total assets	24,816		24,327
Service [Member]
Segment revenues:
Segment revenues, External	706	677
Segment revenues, Internal	0	0
Total revenues	706	677
Product [Member]
Segment revenues:
Segment revenues, External	1,104	1,342
Segment revenues, Internal	0	0
Total revenues	1,104	1,342
Operating Segments [Member]
Segment revenues:
Operating income (loss)	470	567
Williams Partners [Member]
Segment revenues:
Total revenues	1,756	1,968
Segment profit (loss)	456	551
Equity earnings (losses)	18	30
Income (loss) from investments	0	0
Operating income (loss)	438	521
Williams Partners [Member] | Service [Member]
Segment revenues:
Segment revenues, External	701	673
Segment revenues, Internal	0	0
Total revenues	701	673
Williams Partners [Member] | Product [Member]
Segment revenues:
Segment revenues, External	1,055	1,295
Segment revenues, Internal	0	0
Total revenues	1,055	1,295
Williams NGL & Petchem Services [Member]
Segment revenues:
Total revenues	90	89
Segment profit (loss)	36	40
Equity earnings (losses)	0	0
Income (loss) from investments	(1)	(1)
Operating income (loss)	37	41
Williams NGL & Petchem Services [Member] | Service [Member]
Segment revenues:
Segment revenues, External	2	0
Segment revenues, Internal	0	0
Total revenues	2	0
Williams NGL & Petchem Services [Member] | Product [Member]
Segment revenues:
Segment revenues, External	49	47
Segment revenues, Internal	39	42
Total revenues	88	89
Access Midstream Partners G P L L C [Member]
Segment revenues:
Total revenues	0	0
Segment profit (loss)	0	0
Equity earnings (losses)	0	0
Income (loss) from investments	0	0
Operating income (loss)	0	0
Access Midstream Partners G P L L C [Member] | Service [Member]
Segment revenues:
Segment revenues, External	0	0
Segment revenues, Internal	0	0
Total revenues	0	0
Access Midstream Partners G P L L C [Member] | Product [Member]
Segment revenues:
Segment revenues, External	0	0
Segment revenues, Internal	0	0
Total revenues	0	0
Other [Member]
Segment revenues:
Total revenues	7	6
Segment profit (loss)	(5)	59
Equity earnings (losses)	0	1
Income (loss) from investments	0	53
Operating income (loss)	(5)	5
Other [Member] | Service [Member]
Segment revenues:
Segment revenues, External	3	4
Segment revenues, Internal	4	2
Total revenues	7	6
Other [Member] | Product [Member]
Segment revenues:
Segment revenues, External	0	0
Segment revenues, Internal	0	0
Total revenues	0	0
Intersegment Elimination [Member]
Segment revenues:
Total revenues	(43)	(44)
Segment profit (loss)	0	0
Equity earnings (losses)	0	0
Income (loss) from investments	0	0
Operating income (loss)	0	0
Intersegment Elimination [Member] | Service [Member]
Segment revenues:
Segment revenues, External	0	0
Segment revenues, Internal	(4)	(2)
Total revenues	(4)	(2)
Intersegment Elimination [Member] | Product [Member]
Segment revenues:
Segment revenues, External	0	0
Segment revenues, Internal	(39)	(42)
Total revenues	$ (39)	$ (42)

XML

Earnings (Loss) Per Common Share from Continuing Operations (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Common Share from Continuing Operations [Abstract]

Earnings (loss) per common share from continuing operations

		Three months ended March 31,
		2013		2012
			(Dollars in millions, except per-share
			amounts; shares in thousands)
Income (loss) from continuing operations attributable to The Williams
	Companies, Inc. available to common stockholders for basic and
	diluted earnings (loss) per common share	$	162	$	287
Basic weighted-average shares			682,052		593,231
Effect of dilutive securities:
	Nonvested restricted stock units		2,720		3,564
	Stock options		2,187		2,938
	Convertible debentures		184		787
Diluted weighted-average shares			687,143		600,520
Earnings (loss) per common share from continuing operations:
	Basic	$	.24	$	.48
	Diluted	$	.23	$	.47

Stock options excluded

	March 31,
	2013	2012
Options excluded (millions)	-	0.9
Weighted-average exercise price of options excluded	N/A	$29.72
Exercise price ranges of options excluded	N/A	$29.34 - $29.72
First quarter weighted-average market price	$34.89	$29.33

XML

Stockholder's Equity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Total, Beginning Balance	$ (362)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(21)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9
Other comprehensive income (loss)	(12)	20
Total, Ending Balance	(374)
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	231	359
Income Tax Expense (Benefit)	96	133
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	(1)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax	16
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	15
Income Tax Expense (Benefit)	(6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9
Cash flow hedging activities
Total, Beginning Balance	(1)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Other comprehensive income (loss)	0
Total, Ending Balance	(1)
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Foreign currency translation adjustments
Total, Beginning Balance	169
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(21)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Other comprehensive income (loss)	(21)
Total, Ending Balance	148
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0
Pension and other postretirement benefits
Total, Beginning Balance	(530)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	9
Other comprehensive income (loss)	9
Total, Ending Balance	(521)
Reclassifications Out Of Accumulated Other Comprehensive Income [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	$ 9

XML

Employee Benefit Plans (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Components of net periodic benefit cost:
Service cost	$ 11	$ 10
Interest cost	13	14
Expected return on plan assets	(15)	(16)
Amortization of prior service cost (credit)	0	0
Amortization of net actuarial loss	15	13
Net periodic benefit cost	24	21
Other Postretirement Benefits [Member]
Components of net periodic benefit cost:
Service cost	1	1
Interest cost	3	3
Expected return on plan assets	(2)	(2)
Amortization of prior service cost (credit)	(2)	(2)
Amortization of net actuarial loss	2	3
Net periodic benefit cost	$ 2	$ 3

XML

Asset Sales and Other Accruals (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Component of Other Expense, Nonoperating [Line Items]
Operating and maintenance expenses	$ 260	$ 230
Other investing income - net	13	69
Other [Member]
Component of Other Expense, Nonoperating [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal		63
Interest associated with a note receivable related to the sale of certain former Venezuela assets [Member]
Component of Other Expense, Nonoperating [Line Items]
Other investing income - net	$ 13

XML

Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Additional disclosure: [Abstract]
Fair Value, Level 1 to level 2 Transfers, Amount	$ 0		$ 0
Fair Value, Level 2 to level 1 Transfers, Amount	0		0
Carrying Amount [Member]
Additional disclosure: [Abstract]
Notes receivable and other	90		95
Long-term debt, including current portion	(10,609)	[1]	(10,734)	[1]
Guarantee	(33)		(33)
Carrying Amount [Member] | Former Venezuela Operations [Member]
Additional disclosure: [Abstract]
Notes Receivable, Fair Value Disclosure	47
Fair Value [Member]
Additional disclosure: [Abstract]
Notes receivable and other	144		138
Long-term debt, including current portion	(12,129)	[1]	(12,388)	[1]
Guarantee	(30)		(31)
Fair Value [Member] | Former Venezuela Operations [Member]
Additional disclosure: [Abstract]
Notes Receivable, Fair Value Disclosure	101
Level 1 [Member]
Additional disclosure: [Abstract]
Notes receivable and other	0		2
Long-term debt, including current portion	0	[1]	0	[1]
Guarantee	0		0
Level 2 [Member]
Additional disclosure: [Abstract]
Notes receivable and other	8		8
Long-term debt, including current portion	(12,129)	[1]	(12,388)	[1]
Guarantee	(30)		(31)
Level 3 [Member]
Additional disclosure: [Abstract]
Notes receivable and other	136		128
Long-term debt, including current portion	0	[1]	0	[1]
Guarantee	0		0
Fair Value, Measurements, Recurring [Member] | Carrying Amount [Member]
Measured on a recurring basis: [Abstract]
ARO Trust investments	19		18
Fair Value, Measurements, Recurring [Member] | Carrying Amount [Member] | Not Designated as Hedging Instrument [Member]
Measured on a recurring basis: [Abstract]
Energy derivatives assets	5		5
Energy derivative liabilities	(1)		(1)
Fair Value, Measurements, Recurring [Member] | Fair Value [Member]
Measured on a recurring basis: [Abstract]
ARO Trust investments	19		18
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Not Designated as Hedging Instrument [Member]
Measured on a recurring basis: [Abstract]
Energy derivatives assets	5		5
Energy derivative liabilities	(1)		(1)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Measured on a recurring basis: [Abstract]
ARO Trust investments	19		18
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Not Designated as Hedging Instrument [Member]
Measured on a recurring basis: [Abstract]
Energy derivatives assets	0		0
Energy derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Measured on a recurring basis: [Abstract]
ARO Trust investments	0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Not Designated as Hedging Instrument [Member]
Measured on a recurring basis: [Abstract]
Energy derivatives assets	0		0
Energy derivative liabilities	0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Measured on a recurring basis: [Abstract]
ARO Trust investments	0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Not Designated as Hedging Instrument [Member]
Measured on a recurring basis: [Abstract]
Energy derivatives assets	5		5
Energy derivative liabilities	$ (1)		$ (1)

[1] Excludes capital leases.

XML

Debt Leases and Banking Arrangements (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Long-term Debt
Long-term debt due within one year	$ (1)	$ (1)
Long-term debt	$ 10,610	$ 10,735

XML

General, Description of Business, and Basis of Presentation

3 Months Ended

Mar. 31, 2013

Description of Business, Basis of Presentation and Summary of Significant Accounting Policies [Abstract]

Description of Business, Basis of Presentation and Summary Of Significant Accounting Policies [Text Block]

Note 1. General, Description of Business, and Basis of Presentation

General

Our accompanying interim consolidated financial statements do not include all the notes in our annual financial statements and, therefore, should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2012 in our Annual Report on Form 10-K. The accompanying unaudited financial statements include all normal recurring adjustments and others that, in the opinion of management, are necessary to present fairly our interim financial statements.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates.

Unless the context clearly indicates otherwise, references in this report to “we,” “our,” “us,” or similar language refer to The Williams Companies, Inc. and its subsidiaries.

Description of Business

Our operations are located principally in the United States and are organized into the Williams Partners, Williams NGL & Petchem Services, and Access Midstream Partnersreportable segments. All remaining business activities are included in Other.

Williams Partners consists of our consolidated master limited partnership, Williams Partners L.P. (WPZ), and includes gas pipeline and domestic midstream businesses. The gas pipeline businesses primarily consists of two interstate natural gas pipelines, which are Transcontinental Gas Pipe Line Company, LLC (Transco) and Northwest Pipeline GP (Northwest Pipeline), a 50 percent equity investmentin Gulfstream Natural Gas System, L.L.C. (Gulfstream), and a 51 percent consolidated interest in Constitution Pipeline Company, LLC (Constitution). WPZ's midstream operations are composed of significant, large-scale operations in the Rocky Mountain and Gulf Coast regions, operations in the Marcellus Shale region, and various equity investments in domestic natural gas gathering and processing assets and natural gas liquid (NGL) fractionation and transportation assets. WPZ's midstream assets also include substantial operations and investments in the Four Corners region, the Piceance basin, an NGL fractionator and storage facilities near Conway, Kansas as well as an NGL light-feed olefins cracker in Geismar, Louisiana, along with associated ethane and propane pipelines, and a refinery grade splitter in Louisiana.

Williams NGL & Petchem Services consists primarily of a Canadian oil sands offgas processing plant located near Fort McMurray, Alberta, and an NGL/olefin fractionation facility and butylene/butane splitter facility at Redwater, Alberta.

Access Midstream Partners consists of our equity investmentin Access Midstream Partners, L.P. (ACMP). As of March 31, 2013, this investment includes an indirect 50 percent interest in Access Midstream Partners, GP, L.L.C. (Access GP), including incentive distribution rights, and a 24 percent limited partner interest in ACMP.ACMP is a publicly-traded master limited partnership that provides gathering, treating, and compression services to producers under long-term, fee-based contracts. Access GP is the general partner of ACMP.

Other includes other business activities that are not operating segments, as well as corporate operations.

Basis of Presentation

As disclosed in our 2012 Annual Report on Form 10-K, we contributed our 83.3 percent undivided interest of the olefins-production facility in Geismar, Louisiana, along with a refinery grade propylene splitter and pipelines in the Gulf region to WPZ in November 2012. As a result, prior period segment disclosures have been recast for this transaction.

Also as disclosed in our 2012 Annual Report on Form 10-K, we have revised the overall presentation ofour Consolidated Statement of Income, including the separate presentation of service revenues, product sales, product costs, and depreciation and amortization expenses. All prior periods presented have been recast, along with corresponding information presented in the Notes to Consolidated Financial Statements, to reflect this change.

Consolidated master limited partnership

During the first quarter of 2013, WPZ completed equity issuances of 15,937,500 common units representing limited partner interests, including 3,000,000 common units sold to us in a private placement transaction. Following these transactions, we own approximately68percent of the interests in WPZ, including the interests of the general partner, which are wholly owned by us, and incentive distribution rights as of March 31, 2013.

The previously described equity issuances by WPZ had the combined net impact of increasing our noncontrolling interests in consolidated subsidiaries by $435million, capital in excess of par value by $114 million and deferred income taxes by $68 million in the Consolidated Balance Sheet.

WPZ is self-funding and maintains separate lines of bank credit and cash management accounts. Cash distributions from WPZ to us, including any associated with our incentive distribution rights, occur through the normal partnership distributions from WPZ to all partners.

Discontinued operations

The discontinued operations presented in the accompanying consolidated financial statements and notesprimarily reflect gains in 2012 associated with certain of our former Venezuela operations.(See Note  3.)

Unless indicated otherwise, the information in the Notes to Consolidated Financial Statements relates to our continuing operations.

XML

Employee Benefit Plans (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Employer Contributions in Current Fiscal Year	$ 69
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Employer Contributions in Current Fiscal Year	6
Net regulatory assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost (credit) for regulatory assets	(1)	(2)
Amortization of net actuarial (gain) loss for regulatory assets	$ 1	$ 2

XML

Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

Fair Value Assets and Liabilities Measured On Recurring Basis [Text Block]

								Fair Value Measurements Using
									Quoted
									Prices In
									Active		Significant
									Markets for		Other		Significant
									Identical		Observable		Unobservable
				Carrying		Fair			Assets		Inputs		Inputs
				Amount		Value			(Level 1)		(Level 2)		(Level 3)
				(Millions)
Assets (liabilities) at March 31, 2013:
	Measured on a recurring basis:
		ARO Trust investments		$	19	$	19		$	19	$	-	$	-
		Energy derivatives assets not designated as
			hedging instruments		5		5			-		-		5
		Energy derivatives liabilities not designated as
			hedging instruments		(1)		(1)			-		-		(1)
	Additional disclosures:
		Notes receivable and other			90		144			-		8		136
		Long-term debt, including current portion (a)			(10,609)		(12,129)			-		(12,129)		-
		Guarantee			(33)		(30)			-		(30)		-
Assets (liabilities) at December 31, 2012:
	Measured on a recurring basis:
		ARO Trust investments		$	18	$	18		$	18	$	-	$	-
		Energy derivatives assets not designated as
			hedging instruments		5		5			-		-		5
		Energy derivatives liabilities not designated as
			hedging instruments		(1)		(1)			-		-		(1)
	Additional disclosures:
		Notes receivable and other			95		138			2		8		128
		Long-term debt, including current portion (a)			(10,734)		(12,388)			-		(12,388)		-
		Guarantee			(33)		(31)			-		(31)		-
(a) Excludes capital leases

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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2013

Stockholders' Equity [Abstract]

Accumulated Other Comprehensive Income (Loss) [Table Text Block]

								Pension and
				Cash		Foreign		Other Post
				Flow		Currency		Retirement
				Hedges		Translation		Benefits		Total
			(Millions)
Balance at December 31, 2012				$	(1)	$	169	$	(530)	$	(362)
	Other comprehensive income (loss) before
		reclassifications			-		(21)		-		(21)
	Amounts reclassified from accumulated other
		comprehensive income (loss)			-		-		9		9
Other comprehensive income (loss)					-		(21)		9		(12)
Balance at March 31, 2013				$	(1)	$	148	$	(521)	$	(374)

Reclassifications Out Of Accumulated Other Comprehensive Income [Table Text Block]

Component				Reclassifications		Classification
				(Millions)
Pension and other postretirement benefits:
		Amortization of prior service cost (credit) included
			in net periodic benefit cost	$	(1)	Note 7
		Amortization of actuarial (gain) loss included in
			net periodic benefit cost		16	Note 7
	Reclassifications before income tax				15
	Income tax benefit on amortization				(6)	Provision (benefit) for income taxes
Reclassifications during the period				$	9

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Segment Disclosures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues from external customers:
Total revenues	$ 1,810	$ 2,019

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Inventories (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Inventories [Abstract]
Natural gas liquids, olefins, and natural gas in underground storage	$ 109	$ 97
Materials, supplies, and other	81	78
Inventories, Total	$ 190	$ 175

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Segment Disclosures (Tables)

3 Months Ended

Mar. 31, 2013

Segment Disclosures [Abstract]

Reconciliation of segment revenues and segment profit (loss)

						Williams		Access
				Williams		NGL & Petchem		Midstream
				Partners		Services		Partners		Other		Eliminations		Total
				(Millions)
Three months ended March 31, 2013
Segment revenues:
	Service revenues
		External	$	701	$	2	$	-	$	3	$	-	$	706
		Internal		-		-		-		4		(4)		-
	Total service revenues			701		2		-		7		(4)		706
	Product sales
		External		1,055		49		-		-		-		1,104
		Internal		-		39		-		-		(39)		-
	Total product sales			1,055		88		-		-		(39)		1,104
Total revenues			$	1,756	$	90	$	-	$	7	$	(43)	$	1,810
Segment profit (loss)			$	456	$	36	$	-	$	(5)	$	-	$	487
Less:
	Equity earnings (losses)			18		-		-		-		-		18
	Income (loss) from investments			-		(1)		-		-		-		(1)
Segment operating income (loss)			$	438	$	37	$	-	$	(5)	$	-		470
General corporate expenses														(44)
Operating income (loss)													$	426
Three months ended March 31, 2012
Segment revenues:
	Service revenues
		External	$	673	$	-	$	-	$	4	$	-	$	677
		Internal		-		-		-		2		(2)		-
	Total service revenues			673		-		-		6		(2)		677
	Product sales
		External		1,295		47		-		-		-		1,342
		Internal		-		42		-		-		(42)		-
	Total product sales			1,295		89		-		-		(42)		1,342
Total revenues			$	1,968	$	89	$	-	$	6	$	(44)	$	2,019
Segment profit (loss)			$	551	$	40	$	-	$	59	$	-	$	650
Less:
	Equity earnings (losses)			30		-		-		1		-		31
	Income (loss) from investments			-		(1)		-		53		-		52
Segment operating income (loss)			$	521	$	41	$	-	$	5	$	-		567
General corporate expenses														(40)
Operating income (loss)													$	527

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General, Description of Business, and Basis of Presentation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Description of Business, Basis of Presentation and Summary of Significant Accounting Policies [Abstract]
Goodwill	$ 646	$ 649
Other intangibles	1,689	1,704
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Adjustments To Additional Paid In Capital Reallocation Of MinorityInterest	114
Noncontrolling Interest Increase From Stock Issuance And Business Combination	435
Increase To Deferred Tax Due To Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Issuance Of Equity By Subsidiary To Noncontrolling Interests	$ 68
Percent Ownership Of Contributed Business	83.30%
Constitution Pipeline Company LLC
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Variable Interest Entity Ownership Percentage	51.00%
Williams Partners L.P.
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Sale Of Stock Number Of Shares Issued In Transaction	15,937,500
Master limited partnership, ownership percentage	68.00%
Williams Partners L.P. | Private Placement [Member]
Subsidiary of Limited Liability Company or Limited Partnership [Line Items]
Sale Of Stock Number Of Shares Issued In Transaction	3,000,000
Gulfstream Natural Gas System, L.L.C.[Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Access Midstream Partners, GP, L.L.C.[Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Access Midstream Partners Lp [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	24.00%

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Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING ACTIVITIES:
Net income (loss)	$ 230	$ 495
Adjustments to reconcile to net cash provided (used) by operating activities:
Depreciation and amortization	210	168
Provision (benefit) for deferred income taxes	103	86
Net (gain) loss on dispositions of assets	(2)	(57)
Gain on reconsolidation of Wilpro entities (Note 3)	0	(144)
Amortization of stock-based awards	9	9
Cash provided (used) by changes in current assets and liabilities:
Accounts and notes receivable	(72)	52
Inventories	(13)	(17)
Other current assets and deferred charges	11	35
Accounts payable	6	(68)
Accrued liabilities	(25)	(98)
Other, including changes in noncurrent assets and liabilities	38	(27)
Net cash provided (used) by operating activities	495	434
FINANCING ACTIVITIES:
Proceeds from long-term debt	770	0
Payments of long-term debt	(895)	(25)
Proceeds from issuance of common stock	7	26
Proceeds from sale of limited partner units of consolidated partnership	617	490
Dividends paid	(231)	(154)
Dividends and distributions paid to noncontrolling interests	(105)	(61)
Distributions paid to noncontrolling interests on sale of Wilpro assets (Note 3)	0	(38)
Other - net	13	30
Net cash provided (used) by financing activities	176	268
INVESTING ACTIVITIES:
Capital expenditures	(713)	(329)
Purchases of and contributions to equity method investments	(93)	(48)
Purchases of businesses	0	(325)
Proceeds from dispositions of investments	0	78
Cash of Wilpro entities upon reconsolidation (Note 3)	0	121
Other - net	(2)	12
Net cash provided (used) by investing activities	(808)	(491)
Increase (decrease) in cash and cash equivalents	(137)	211
Cash and cash equivalents at beginning of period	839	889
Cash and cash equivalents at end of period	702	1,100
Increases to property, plant and equipment	(732)	(371)
Changes in related accounts payable and accrued liabilities	19	42
Capital expenditures	$ (713)	$ (329)

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Acquisitions (Details)	Mar. 31, 2013
Access Midstream Partners G P L L C [Member]
Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	50.00%
Access Midstream Partners L.P. (ACMP) [Member]
Equity Method Investments [Abstract]
Equity Method Investment, Ownership Percentage	24.00%

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Employee Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Change in benefit obligation:
Service cost	$ 11	$ 10
Interest cost	13	14
Other Postretirement Benefits [Member]
Change in benefit obligation:
Service cost	1	1
Interest cost	$ 3	$ 3

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Fair Value Measurements (Details Textuals) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Wpx Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 169
Wiltel Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 36	$ 36

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Consolidated Statement of Income (Unaudited) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Service revenues	$ 706	$ 677
Product sales	1,104	1,342
Total revenues	1,810	2,019
Costs and expenses:
Product costs	790	957
Operating and maintenance expenses	260	230
Depreciation and amortization expenses	210	168
Selling, general, and administrative expenses	132	129
Other (income) expense - net	(8)	8
Total costs and expenses	1,384	1,492
Operating income (loss)	426	527
Equity earnings (losses)	18	31
Interest incurred	(152)	(141)
Interest capitalized	24	10
Other investing income - net	13	69
Other income (expense) - net	(2)	(4)
Income (loss) from continuing operations before income taxes	327	492
Provision (benefit) for income taxes	96	133
Income (loss) from continuing operations	231	359
Income (loss) from discontinued operations	(1)	136
Net income (loss)	230	495
Less: Net income attributable to noncontrolling interests	69	72
Net income (loss) attributable to The Williams Companies, Inc.	161	423
Amounts attributable to The Williams Companies, Inc.:
Income (loss) from continuing operations	162	287
Income (loss) from discontinued operations	(1)	136
Net income (loss)	$ 161	$ 423
Basic earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.24	$ 0.48
Income (loss) from discontinued operations	$ 0	$ 0.23
Net income (loss)	$ 0.24	$ 0.71
Weighted-average shares (thousands)	682,052	593,231
Diluted earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.23	$ 0.47
Income (loss) from discontinued operations	$ 0	$ 0.23
Net income (loss)	$ 0.23	$ 0.70
Weighted-average shares (thousands)	687,143	600,520
Cash dividends declared per common share	$ 0.33875	$ 0.25875

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Property, Plant, and Equipment (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Property, Plant, and Equipment
Total property, plant, and equipment, at cost	$ 23,197	$ 22,546
Property, plant and equipment - net	$ 15,995	$ 15,467

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Consolidated Balance Sheet (Parenthetical) (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Stockholders' equity:
Common Stock, Shares Authorized	960	960
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Issued	717	716
Treasury Stock, Shares	35	35

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Schedule I Condensed Financial Information Of Parent Only (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Condensed Statement Of Comprehensive Income Parent Company Only [Abstract]
Interest incurred - external	$ (152)	$ (141)
Other income (expense) - net	(2)	(4)
Income from continuing operations before income taxes	327	492
Provision for income taxes	96	133
Income (loss) from continuing operations	162	287
Income (loss) from discontinued operations	(1)	136
Net income (loss)	161	423
Basic earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.24	$ 0.48
Income (loss) from discontinued operations	$ 0	$ 0.23
Net income (loss)	$ 0.24	$ 0.71
Weighted-average shares (thousands)	682,052	593,231
Diluted earnings (loss) per common share:
Income (loss) from continuing operations	$ 0.23	$ 0.47
Income (loss) from discontinued operations	$ 0	$ 0.23
Net income (loss)	$ 0.23	$ 0.70
Weighted-average shares (thousands)	687,143	600,520
Other comprehensive income (loss):
Other comprehensive income (loss)	(12)	20
Comprehensive Income (loss) attributable to The Williams Companies, Inc.	149	445
Assets, Current [Abstract]
Cash and cash equivalents	702	1,100
Other current assets	45		66
Total current assets	1,864		1,924
Property, plant and equipment - net	15,995		15,467
Other noncurrent assets	583		596
Total assets	24,816		24,327
Liabilities, Current [Abstract]
Long-term debt due within one year	1		1
Total current liabilities	1,560		1,549
Long-term debt	10,610		10,735
Deferred income taxes	3,015		2,841
Contingent liabilities and commitments
Equity: [Abstract]
Common stock	717		716
Total stockholders' equity	7,870		7,427
Total liabilities and stockholders' equity	24,816		24,327
Condensed Statement Of Cash Flows Parent Company Only [Abstract]
Net Cash Provided by (Used in) Operating Activities	495	434
FINANCING ACTIVITIES:
Proceeds from long-term debt	770	0
Payments of long-term debt	(895)	(25)
Proceeds from issuance of common stock	7	26
Dividends paid	(231)	(154)
Other - net	13	30
Net cash provided (used) by financing activities	176	268
INVESTING ACTIVITIES:
Capital expenditures	(713)	(329)
Other - net	(2)	12
Net cash provided (used) by investing activities	(808)	(491)
Increase (decrease) in cash and cash equivalents	(137)	211
Cash and cash equivalents at beginning of period	839	889
Cash and cash equivalents at end of period	$ 702	$ 1,100

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Investing Activities (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Investing income
Equity earnings (losses)	$ 18	$ 31
Income (loss) from investments	(1)	52
Investments
Equity Method Investment, payments to purchase or contributions	93	48
Other [Member]
Investing income
Equity earnings (losses)	0	1
Income (loss) from investments	0	53
Williams Partners [Member]
Investing income
Equity earnings (losses)	18	30
Income (loss) from investments	0	0
Gulfstream Natural Gas System LLC [Member]
Investments
Equity Method Investment, Ownership Percentage	50.00%
Discovery Producer Services LLC [Member]
Investments
Equity Method Investments	357
Laurel Mountain Midstream, LLC [Member]
Investments
Equity Method Investments	$ 483
Access Midstream Partners G P L L C [Member]
Investments
Equity Method Investment, Ownership Percentage	50.00%

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Variable Interest Entities (Tables)

3 Months Ended

Mar. 31, 2013

Variable Interest Entity Disclosures [Abstract]

Schedule of Variable Interest Entities [Table Text Block]

			March 31,		December 31,
			2013		2012		Classification
			(Millions)
Gulfstar:
	Construction work in process		$	572	$	532	Property, plant, and equipment, at cost
	Accounts payable			88		124	Accounts payable
	Construction retainage			1		-	Accrued liabilities
	Deferred revenue associated with
		customer advance payments		109		109	Other noncurrent liabilities
Constitution:
	Cash and cash equivalents			7		8	Cash and cash equivalents
	Construction work in process			31		24	Property, plant, and equipment, at cost
	Accounts payable			5		4	Accounts payable

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Asset Sales and Other Accruals (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Component of Operating Other Cost and Expense [Line Items]
Other (income) expense - net	$ (8)	$ 8

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Provision (Benefit) for Income Taxes (Tables)

3 Months Ended

Mar. 31, 2013

Provision (Benefit) for Income Taxes [Abstract]

Provision (benefit) for income taxes from continuing operations

		Three months ended March 31,
			2013		2012
			(Millions)
Current:
	Federal	$	(11)	$	21
	State		2		4
	Foreign		2		21
			(7)		46
Deferred:
	Federal		82		87
	State		13		(3)
	Foreign		8		3
			103		87
Total provision (benefit)		$	96	$	133

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Consolidated Statement of Changes in Equity (Unaudited) (USD $) In Millions	Total	Common Stock	Additional Paid-in Capital [Member]	Retained Earnings (Deficit)	Accumulated Other Comprehensive Loss	Treasury Stock	Total Stockholders' Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2012	$ 7,427	$ 716	$ 11,134	$ (5,695)	$ (362)	$ (1,041)	$ 4,752	$ 2,675
Net income (loss)	230	0	0	161	0	0	161	69
Other comprehensive income (loss)	(12)	0	0	0	(12)	0	(12)	0
Cash dividends - common stock	(231)	0	0	(231)	0	0	(231)	0
Dividends and distributions to noncontrolling interests	(105)	0	0	0	0	0	0	(105)
Stock-based compensation and related common stock issuances, net of tax	11	1	10	0	0	0	11	0
Sales of limited partner units of Williams Partners L.P.	617	0	0	0	0	0	0	617
Changes in William Partners L.P. ownership interest, net	(68)	0	114	0	0	0	114	(182)
Contributions from noncontrolling interests	2	0	0	0	0	0	0	2
Other	(1)	0	0	0	0	0	0	(1)
Ending balance at Mar. 31, 2013	$ 7,870	$ 717	$ 11,258	$ (5,765)	$ (374)	$ (1,041)	$ 4,795	$ 3,075

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Consolidated Statement of Comprehensive Income (Loss) (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Comprehensive income (loss):
Net income (loss)	$ 230	$ 495
Cash flow hedging activities:
Net unrealized gain (loss) from derivative instruments, net of taxes	0	(6)
Reclassifications into earnings of net derivative instruments (gain) loss, net of taxes	0	1
Foreign currency translation adjustments	(21)	19
Pension and other postretirement benefits:
Amortization of prior service cost (credit) included in net periodic benefit cost, net of taxes	(1)	0
Amortization of actuarial (gain) loss included in net periodic benefit cost, net of taxes	10	9
Equity securities:
Reclassifications into earnings of (gain) loss on sale of equity securities, net of taxes	0	(3)
Other comprehensive income (loss)	(12)	20
Comprehensive income (loss)	218	515
Less: Comprehensive income (loss) attributable to noncontrolling interest	69	70
Comprehensive Income (loss) attributable to The Williams Companies, Inc.	$ 149	$ 445

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Debt, Leases and Banking Arrangements

3 Months Ended

Mar. 31, 2013

Debt Leases and Banking Arrangements [Abstract]

Debt Leases And Banking Arrangements

Note 9. Debt and Banking Arrangements

Credit Facilities

At March 31, 2013, letter of credit capacity under our $900 million and WPZ's $2.4 billion credit facilities is $700 million and $1.3 billion, respectively. At March 31, 2013, no letters of credit have been issued and no loans are outstanding on ourcredit facility. At March 31, 2013, no letters of credit have been issued and loans totaling $250 million are outstanding on WPZ's credit facility. We have issued letters of credit totaling $17 million as of March 31, 2013, under certain bilateral bank agreements.

Commercial Paper Program

In March 2013, WPZ initiated a commercial paper program. The program allows a maximum outstanding amount at any time of $2 billion of unsecured commercial paper notes. The maturities of the commercial paper notes will vary but may not exceed 397 days from the date of issuance. The commercial paper notes will be sold under customary terms in the commercial paper market and will be issued at a discount from par, or, alternatively, will be sold at par and bear varying interest rates on a fixed or floating basis. Proceeds from these notes are expected to be used to fund planned capital expenditures and for other general partnership purposes. WPZ has not yet issued any notes under this commercial paper program.

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Document and Entity Information	3 Months Ended
	Mar. 31, 2013	May 03, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	Williams Companies Inc
Entity Central Index Key	0000107263
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Amendment Flag	false
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		682,693,321

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Stockholders' Equity

3 Months Ended

Mar. 31, 2013

Stockholders' Equity [Abstract]

Stockholders' Equity

Note 10. Stockholders' Equity

The following table presents the changes in accumulated other comprehensive income (loss)by component, net of income taxes:

								Pension and
				Cash		Foreign		Other Post
				Flow		Currency		Retirement
				Hedges		Translation		Benefits		Total
			(Millions)
Balance at December 31, 2012				$	(1)	$	169	$	(530)	$	(362)
	Other comprehensive income (loss) before
		reclassifications			-		(21)		-		(21)
	Amounts reclassified from accumulated other
		comprehensive income (loss)			-		-		9		9
Other comprehensive income (loss)					-		(21)		9		(12)
Balance at March 31, 2013				$	(1)	$	148	$	(521)	$	(374)

Reclassifications out of accumulated other comprehensive income (loss)are presented in the following table by component as of March 31, 2013:

Component				Reclassifications		Classification
				(Millions)
Pension and other postretirement benefits:
		Amortization of prior service cost (credit) included
			in net periodic benefit cost	$	(1)	Note 7
		Amortization of actuarial (gain) loss included in
			net periodic benefit cost		16	Note 7
	Reclassifications before income tax				15
	Income tax benefit on amortization				(6)	Provision (benefit) for income taxes
Reclassifications during the period				$	9

XML

Consolidated Statement of Comprehensive Income (Loss) (Parenthetical) (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease [Abstract]
Other Comprehensive Income, Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ 0	$ 2
Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Tax	0	0
Other Comprehensive Income Defined Benefit Plans Tax [Abstract]
Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax	0	0
Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax	(6)	(5)
Other Comprehensive Income Available For Sale Securities Tax [Abstract]
Other Comprehensive Income Loss Reclassification Adjustment For Sale Of Securities Included In Net Income Tax	$ 0	$ 2

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Asset Sales and Other Accruals

3 Months Ended

Mar. 31, 2013

Asset Sales and Other Accruals [Abstract]

Asset Sales and Other Accruals

Note 4. Asset Sales and Other Accruals

Other investing income – net includes $13 million of interest income in the first quarter of 2013 associated with a receivable related to the sale of certain former Venezuela assets (see Note 3). This amount reflects a first-quarter 2013 change in yield associated with a revision in our estimate of the cash flows expected to be received as a result of continued timely payment by the counterparty. In the first quarter of 2012, other investing income – net includes $63 million of income related to the 2010 sale of our interest in Accroven SRL. As part of a settlement regarding certain Venezuelan assets in the first quarter of 2012 (see Note 3), we also received payment for all outstanding balances due from this sale, including interest. Payments were recognized upon receipt, as future collections were not reasonably assured.

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Discontinued Operations

3 Months Ended

Mar. 31, 2013

Discontinued Operations [Abstract]

Discontinued Operations

Note 3. Discontinued Operations

Summarized Results of Discontinued Operations
		Three months ended March 31,
		2013			2012
			(Millions)
Income (loss) from discontinued operations before gain on reconsolidation		$	(1)	$	(8)
Gain on reconsolidation			-		144
	Income (loss) from discontinued operations	$	(1)	$	136
Income (loss) from discontinued operations:
	Attributable to The Williams Companies, Inc.	$	(1)	$	136

Gain on reconsolidation for 2012 is related to our majority ownership in entities (the Wilpro entities) that owned and operated the El Furrial and PIGAP II gas compression facilities prior to their expropriation by the Venezuelan government in May 2009. We deconsolidated the Wilproentities in 2009. In the first quarter of 2012, the El Furrial and PIGAP II assets were sold as part of a settlement related to the 2009 expropriation of these assets. Upon closing, the lenders that had provided financing for these operations were repaid in full, and the Wilpro entities received $98 million in cash andthe right to receive quarterly cash installments of $15 million (receivable) plus interest through the first quarter of 2016. Following the settlement and repayment in full of the lenders, we reestablished control and, therefore, reconsolidated the Wilpro entities and recognized a gain on reconsolidation.This gain reflected our share of the cash, including cash received in the settlement, and the estimated fair value of the receivable held by the Wilpro entities at the time of reconsolidation. See Note 11 for a further discussion of this receivable.

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Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2013

Discontinued Operations [Abstract]

Summarized Results of Discontinued Operations

Summarized Results of Discontinued Operations
		Three months ended March 31,
		2013			2012
			(Millions)
Income (loss) from discontinued operations before gain on reconsolidation		$	(1)	$	(8)
Gain on reconsolidation			-		144
	Income (loss) from discontinued operations	$	(1)	$	136
Income (loss) from discontinued operations:
	Attributable to The Williams Companies, Inc.	$	(1)	$	136

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Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Measurements [Abstract]

Fair Value Measurements

Note 11. Fair Value Measurements

The following table presents, by level within the fair value hierarchy, certain of our financial assets and liabilities. The carrying values of cash and cash equivalents, accounts receivableand accounts payable approximate fair value because of the short-term nature of these instruments.Therefore, these assets and liabilities are not presented in the following table.

								Fair Value Measurements Using
									Quoted
									Prices In
									Active		Significant
									Markets for		Other		Significant
									Identical		Observable		Unobservable
				Carrying		Fair			Assets		Inputs		Inputs
				Amount		Value			(Level 1)		(Level 2)		(Level 3)
				(Millions)
Assets (liabilities) at March 31, 2013:
	Measured on a recurring basis:
		ARO Trust investments		$	19	$	19		$	19	$	-	$	-
		Energy derivatives assets not designated as
			hedging instruments		5		5			-		-		5
		Energy derivatives liabilities not designated as
			hedging instruments		(1)		(1)			-		-		(1)
	Additional disclosures:
		Notes receivable and other			90		144			-		8		136
		Long-term debt, including current portion (a)			(10,609)		(12,129)			-		(12,129)		-
		Guarantee			(33)		(30)			-		(30)		-
Assets (liabilities) at December 31, 2012:
	Measured on a recurring basis:
		ARO Trust investments		$	18	$	18		$	18	$	-	$	-
		Energy derivatives assets not designated as
			hedging instruments		5		5			-		-		5
		Energy derivatives liabilities not designated as
			hedging instruments		(1)		(1)			-		-		(1)
	Additional disclosures:
		Notes receivable and other			95		138			2		8		128
		Long-term debt, including current portion (a)			(10,734)		(12,388)			-		(12,388)		-
		Guarantee			(33)		(31)			-		(31)		-
(a) Excludes capital leases

FairValue Methods

We use the following methods and assumptions in estimating the fairvalue of our financial instruments:

Assets and liabilities measured at fair value on a recurring basis

ARO Trust investments:Transco deposits a portion of its collected rates, pursuant to its 2008 rate case settlement, into an external trust (ARO Trust) that is specifically designated to fund future asset retirement obligations. The ARO Trust invests in a portfolio of actively traded mutual funds that are measured at fair value on a recurring basis based on quoted prices in active market, is classified as available-for-sale, and is reported in regulatory assets, deferred charges, and other in the Consolidated Balance Sheet. Both realized and unrealized gains and losses are ultimately recorded as regulatory assets or liabilities.

Energy derivatives:Energy derivatives include commodity based exchange-traded contracts and over-the-counter (OTC) contracts, which consist of physical forwards, futures, and swaps that are measured at fair value on a recurring basis.The fair value amounts are presented on a gross basis and do not reflect the netting of asset and liability positions permitted under the terms of our master netting arrangements. Further, the amounts do not include cash held on deposit in margin accounts that we have received or remitted to collateralize certain derivative positions. Energy derivatives assets are reported in other current assets and deferred chargesandregulatory assets, deferred charges, and otherin the Consolidated Balance Sheet. Energy derivatives liabilities are reported in other noncurrent liabilitiesin the Consolidated Balance Sheet.

Reclassifications of fair value between Level 1, Level 2, and Level 3 of the fair value hierarchy, if applicable, are made at the end of each quarter. No transfers between Level 1 and Level 2 occurred during the three monthsended March 31, 2013or 2012.

Additional fair value disclosures

Notes receivable and other:Notes receivable and other includesa receivable related to the sale of certain former Venezuela assets. To determine the disclosed fair value of this receivable at March 31, 2013, we considered an income approach. We calculated the net present value of a probability-weighted set of cash flows utilizing assumptions based on contractual terms, historical payment patterns by the counterparty, future probabilities of default, our likelihood of using arbitration if the counterparty does not perform, and discount rates. We determined the fair value of the receivable to be $101 million at March 31, 2013. The carrying value of thisreceivable is $47 millionatMarch 31, 2013. The current and noncurrent portions are reported in accounts and notes receivable and regulatory assets, deferred charges, and other, respectively, in the Consolidated Balance Sheet.

Notes receivable and otheralso includesa receivable from our former affiliate, WPX (see Note 12) and other notes receivable.The disclosed fair value of these receivables is determined by an income approach which considers the underlying contract amounts andour assessment of our ability to recover these amounts. The current portion is reported in accounts and notes receivable, and the noncurrent portion is reported inregulatory assets, deferred charges, and other in the Consolidated Balance Sheet.

Long-term debt:The disclosed fair value of our long-term debt is determined by a market approach using broker quoted indicative period-end bond prices. The quoted prices are based on observable transactions in less active markets for our debt or similar instruments.

Guarantee:The guarantee represented in the table consists of a guarantee we have provided in the event of nonpayment by our previously owned communications subsidiary, Williams Communications Group (WilTel), on a lease performance obligation that extends through 2042.

To estimate the disclosed fair value of the guarantee, an estimated default rate is applied to the sum of the future contractual lease paymentsusing an income approach.The estimated default rate is determined by obtaining the average cumulative issuer-weighted corporate default rate based on the credit rating of WilTel's current owner and the term of the underlying obligation. The default rate is published by Moody's Investors Service. This guarantee is reported in accrued liabilities in the Consolidated Balance Sheet.

Guarantees

We are required by our revolving credit agreements to indemnify lenders for certain taxes required to be withheld from payments due to the lenders and for certain tax payments made by the lenders. The maximum potential amount of future payments under these indemnifications is based on the related borrowings and such future payments cannot currently be determined. These indemnifications generally continue indefinitely unless limited by the underlying tax regulations and have no carrying value. We have never been called upon to perform under these indemnifications and have no current expectation of a future claim.

Regarding our previously described guarantee of Wiltel's lease performance, the maximum potential exposure is approximately $36million at March 31, 2013 and December 31, 2012. Our exposure declines systematically throughout the remaining term of WilTel's obligation.

We have providedguarantees in the event of nonpayment by our previously owned subsidiary, WPX, on certain contracts, primarily a natural gas purchase contract extending through 2023. We estimate the maximum undiscounted potential future payment obligation under these remaining guarantees is approximately $169 million at March 31, 2013.Our recorded liability for these guarantees, which considers our estimate of the fair value of the guarantees, is insignificant.

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Employee Benefit Plans

3 Months Ended

Mar. 31, 2013

Employee Benefit Plans [Abstract]

Employee Benefit Plans

Note 7. Employee Benefit Plans

Net periodic benefit cost is as follows:

						Other Postretirement
		Pension Benefits				Benefits
		Three months ended March 31,				Three months ended March 31,
		2013		2012		2013		2012
		(Millions)
Components of net periodic benefit cost:
	Service cost	$	11	$	10	$	1	$	1
	Interest cost		13		14		3		3
	Expected return on plan assets		(15)		(16)		(2)		(2)
	Amortization of prior service credit		-		-		(2)		(2)
	Amortization of net actuarial loss		15		13		2		3
	Net periodic benefit cost	$	24	$	21	$	2	$	3

Amortization of prior service credit and net actuarial loss included in net periodic benefit cost for our other postretirement benefit plans associated with our Federal Energy Regulatory Commission (FERC)regulated gas pipelines are recorded to net regulatory assets instead of other comprehensive income (loss).

	Amounts recognized in net regulatory assets include:
		Three months ended March 31,
		2013		2012
			(Millions)
Amortization of prior service credit		$	(1)	$	(2)
Amortization of net actuarial loss			1		2

During the three months ended March 31,2013, we contributed $23million to our pension plans and $3million to our other postretirement benefit plans. We presently anticipate makingadditional contributions of approximately $69millionto our pension plans andapproximately $6millionto our other postretirement benefit plans in the remainder of 2013.

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Provision (Benefit) for Income Taxes

3 Months Ended

Mar. 31, 2013

Provision (Benefit) for Income Taxes [Abstract]

Provision (Benefit) for Income Taxes

Note 5. Provision (Benefit) for Income Taxes

The provision (benefit) for income taxes includes:

		Three months ended March 31,
			2013		2012
			(Millions)
Current:
	Federal	$	(11)	$	21
	State		2		4
	Foreign		2		21
			(7)		46
Deferred:
	Federal		82		87
	State		13		(3)
	Foreign		8		3
			103		87
Total provision (benefit)		$	96	$	133

The effective income tax rates for the total provision for the three months ended March 31, 2013 and 2012 are less than the federal statutory rate primarily due to the impact of nontaxable noncontrolling interests and taxes on foreign operations, partially offset by the effect of state income taxes.

During the first quarter of 2013, we finalized a settlement with the Internal Revenue Service (IRS) on tax matters related to the IRS's examination of our 2009 and 2010 consolidated corporate income tax returns.  We recorded a tax provision of approximately $2 million related to these matters during the third quarter of 2012.  With respect to the examined years, we made cash payments of $12 million to the IRS in February of 2013.

With the spin-off of WPX Energy, Inc. (WPX) on December 31, 2011, WPX entered into a tax sharing agreement with us under which we are generally liable for all U.S. federal, state, local and foreign income taxes attributable to WPX with respect to taxable periods ending on or before the distribution date. We are also principally responsible for managing any income tax audits by the various tax jurisdictions for pre-spin-off periods. In 2012, we prepared pro forma tax returns for each tax period in which WPX or any of its subsidiaries were combined or consolidated with us for purposes of any 2011 tax return. In the first quarter of 2013, we reimbursed WPX a net $2 million for the additional losses shown on the pro forma tax returns, offset with additional tax resulting from the 2009 to 2010 IRS settlement.

During the next 12 months, we do not expect ultimate resolution of any unrecognized tax benefit associated with domestic or international matters to have a material impact on our unrecognized tax benefit position.

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Earnings (Loss) Per Common Share from Continuing Operations

3 Months Ended

Mar. 31, 2013

Earnings Per Common Share from Continuing Operations [Abstract]

Earnings Per Common Share from Continuing Operations

Note 6. Earnings (Loss) Per Common Share from Continuing Operations

		Three months ended March 31,
		2013		2012
			(Dollars in millions, except per-share
			amounts; shares in thousands)
Income (loss) from continuing operations attributable to The Williams
	Companies, Inc. available to common stockholders for basic and
	diluted earnings (loss) per common share	$	162	$	287
Basic weighted-average shares			682,052		593,231
Effect of dilutive securities:
	Nonvested restricted stock units		2,720		3,564
	Stock options		2,187		2,938
	Convertible debentures		184		787
Diluted weighted-average shares			687,143		600,520
Earnings (loss) per common share from continuing operations:
	Basic	$	.24	$	.48
	Diluted	$	.23	$	.47

Effective January 1, 2012, new awards of time-based restricted stock units contain a nonforfeitable right to dividends during the vesting period. These share-based payment awards are participating securities and are included in the computation of earnings (loss) per common share pursuant to the two-class method. The impact for the three months ended March 31, 2013 and 2012,is immaterial.

For the three months ended March 31, 2012, 1.1 million weighted-average stock options have been excluded from the computation of diluted earnings per common share as their inclusion would be antidilutive.

The table below includes information related to stock options that were outstanding at March 31 of each respective year but have been excluded from the computation of weighted-average stock options due to the option exercise price exceeding the first quarter weighted-average market price of our common shares.

	March 31,
	2013	2012
Options excluded (millions)	-	0.9
Weighted-average exercise price of options excluded	N/A	$29.72
Exercise price ranges of options excluded	N/A	$29.34 - $29.72
First quarter weighted-average market price	$34.89	$29.33

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Inventories

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Inventories

	March 31,		December 31,
	2013		2012
		(Millions)
Natural gas liquids, olefins, and natural gas in underground storage	$	109	$	97
Materials, supplies, and other		81		78
	$	190	$	175

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Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Summarized Results of Discontinued Operations
Income (loss) from discontinued operations before gain on reconsolidation	$ (1)	$ (8)
Gain on reconsolidation	0	144
Income (loss) from discontinued operations	(1)	136
Income (loss) from discontinued operations
Attributable to The Williams Companies, Inc.	(1)	136
Venezuela operations [Member]
Textuals [Abstract]
Cash Payments Received Related To Former Venezuela Operations Settlement		98
Cash Installments Related To Former Operations Settlement		$ 15

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Stock-Based Compensation (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Stock Based Compensation (Textuals) [Abstract]
Amortization of stock-based awards	$ 9	$ 9

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Segment Disclosures

3 Months Ended

Mar. 31, 2013

Segment Disclosures [Abstract]

Segment Disclosures

Note 13. Segment Disclosures

Our reporting segments are Williams Partners, Williams NGL & Petchem Services, andAccess Midstream Partners. All remaining business activities are included in Other. (See Note 1.)

Performance Measurement

We currently evaluate performance based upon segment profit (loss) from operations, which includes segment revenues from external and internal customers, segment costs and expenses, equity earnings (losses) and income(loss) from investments. General corporate expenses represent selling, general, and administrative expenses that are not allocated to our segments. Intersegment revenues are generally accounted for at current market prices as if the sales were to unaffiliated third parties.

The following table reflects the reconciliation of segment revenues and segment profit (loss) to revenues and operating income (loss) as reported in the Consolidated Statement of Income.

						Williams		Access
				Williams		NGL & Petchem		Midstream
				Partners		Services		Partners		Other		Eliminations		Total
				(Millions)
Three months ended March 31, 2013
Segment revenues:
	Service revenues
		External	$	701	$	2	$	-	$	3	$	-	$	706
		Internal		-		-		-		4		(4)		-
	Total service revenues			701		2		-		7		(4)		706
	Product sales
		External		1,055		49		-		-		-		1,104
		Internal		-		39		-		-		(39)		-
	Total product sales			1,055		88		-		-		(39)		1,104
Total revenues			$	1,756	$	90	$	-	$	7	$	(43)	$	1,810
Segment profit (loss)			$	456	$	36	$	-	$	(5)	$	-	$	487
Less:
	Equity earnings (losses)			18		-		-		-		-		18
	Income (loss) from investments			-		(1)		-		-		-		(1)
Segment operating income (loss)			$	438	$	37	$	-	$	(5)	$	-		470
General corporate expenses														(44)
Operating income (loss)													$	426
Three months ended March 31, 2012
Segment revenues:
	Service revenues
		External	$	673	$	-	$	-	$	4	$	-	$	677
		Internal		-		-		-		2		(2)		-
	Total service revenues			673		-		-		6		(2)		677
	Product sales
		External		1,295		47		-		-		-		1,342
		Internal		-		42		-		-		(42)		-
	Total product sales			1,295		89		-		-		(42)		1,342
Total revenues			$	1,968	$	89	$	-	$	6	$	(44)	$	2,019
Segment profit (loss)			$	551	$	40	$	-	$	59	$	-	$	650
Less:
	Equity earnings (losses)			30		-		-		1		-		31
	Income (loss) from investments			-		(1)		-		53		-		52
Segment operating income (loss)			$	521	$	41	$	-	$	5	$	-		567
General corporate expenses														(40)
Operating income (loss)													$	527

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Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Employee Benefit Plans [Abstract]

Componenets of net periodic benefit cost [Table Text Block]

						Other Postretirement
		Pension Benefits				Benefits
		Three months ended March 31,				Three months ended March 31,
		2013		2012		2013		2012
		(Millions)
Components of net periodic benefit cost:
	Service cost	$	11	$	10	$	1	$	1
	Interest cost		13		14		3		3
	Expected return on plan assets		(15)		(16)		(2)		(2)
	Amortization of prior service credit		-		-		(2)		(2)
	Amortization of net actuarial loss		15		13		2		3
	Net periodic benefit cost	$	24	$	21	$	2	$	3

Amounts recognized in net regulatory assets [Table Text Block]

	Amounts recognized in net regulatory assets include:
		Three months ended March 31,
		2013		2012
			(Millions)
Amortization of prior service credit		$	(1)	$	(2)
Amortization of net actuarial loss			1		2

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Debt Leases and Banking Arrangements (Details Textual) (USD $)	3 Months Ended
	Mar. 31, 2013
Debt Leases and Banking Arrangements (Textuals) [Abstract]
Outstanding amount under commercial paper program	$ 0
Commercial paper, maximum maturity days	397 days
Commercial paper, maximum borrowing capacity	2,000,000,000
$ 900 million unsecured credit facility effective June 2011
Line of Credit Facility [Line Items]
Loans outstanding	0
$ 900 million unsecured credit facility effective June 2011 | Letter of Credit Capacity
Line of Credit Facility [Line Items]
Amount of unsecured credit facility	700,000,000
$2.4 billion WPZ unsecured credit facility
Line of Credit Facility [Line Items]
Loans outstanding	250,000,000
$2.4 billion WPZ unsecured credit facility | Letter of Credit Capacity
Line of Credit Facility [Line Items]
Amount of unsecured credit facility	$ 1,300,000,000

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Employee Benefit Plans (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Pension Benefits [Member]
Change in plan assets:
Employer contributions	$ 23
Other Postretirement Benefits [Member]
Change in plan assets:
Employer contributions	$ 3

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Consolidated Balance Sheet (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 702	$ 839
Accounts and notes receivable	760	688
Deferred income tax asset	117	117
Inventories	190	175
Regulatory assets	50	39
Other current assets and deferred charges	45	66
Total current assets	1,864	1,924
Investments	4,039	3,987
Property, Plant and Equipment, at cost	23,197	22,546
Accumulated depreciation and amortization	(7,202)	(7,079)
Property, plant and equipment - net	15,995	15,467
Goodwill	646	649
Other intangibles	1,689	1,704
Regulatory assets, deferred charges, and other	583	596
Total assets	24,816	24,327
Current liabilities:
Accounts payable	935	920
Accrued liabilities	624	628
Long-term debt due within one year	1	1
Total current liabilities	1,560	1,549
Long-term debt	10,610	10,735
Deferred income taxes	3,015	2,841
Other noncurrent liabilities	1,761	1,775
Contingent liabilities (Note 12)
Stockholders' equity:
Common stock (960 million shares authorized at $1 par value; 717 million shares issued at March 31, 2013, and 716 million shares issued at December 31, 2012)	717	716
Capital in excess of par value	11,258	11,134
Retained deficit	(5,765)	(5,695)
Accumulated other comprehensive income (loss)	(374)	(362)
Treasury stock, at cost (35 million shares of common stock)	(1,041)	(1,041)
Total stockholders' equity	4,795	4,752
Noncontrolling interests in consolidated subsidiaries	3,075	2,675
Total equity	7,870	7,427
Total liabilities and equity	$ 24,816	$ 24,327

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Variable Interest Entities

3 Months Ended

Mar. 31, 2013

Variable Interest Entity Disclosures [Abstract]

Variable Interest Entity Disclosures [Textblock]

Note 2. Variable Interest Entities

We consolidate the activities of variable interest entities (VIEs) of which we are the primary beneficiary. The primary beneficiary of a VIE is the entity that has both (1) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (2) the obligation to absorb losses or the right to receive benefits that could be significant to the VIE. As of March 31, 2013, WPZ has the following consolidated VIEs:

• Gulfstar One LLC (Gulfstar) is a consolidated wholly owned subsidiary that, due to certain risk sharing provisions in its customer contracts, is a VIE. WPZ, as construction agent for Gulfstar, will design, construct, and install a proprietary floating-production system, Gulfstar FPSTM, and associated pipelines which will initially provide production handling and gathering services for the Tubular Bells oil and gas discovery in the eastern deepwater Gulf of Mexico. Construction is underway and the project is expected to be in service in 2014. WPZ has received certain advance payments from the producer customers andis committed to the producer customers to construct this system. The current estimate of the total remaining construction costsis less than $450 million. If the producer customers do not develop the offshore oil and gas fields to be connected to Gulfstar, they will be responsible for the firm price of building the facilities. On April 1, 2013, a third party contributed $187 million to Gulfstar in exchange for a 49 percent ownership interest in Gulfstar. This contribution was based on 49 percent of WPZ's estimated cumulative net investment at that date, subject to adjustment within 60 days of the contribution date. The $187 million was then distributed to WPZ. Both WPZ and the third party are responsible for making regular capital contributions to fundeach party's respective share of ongoing construction costs.
• WPZ owns a 51 percent interest in Constitution, a subsidiary that, due to shipper fixed-payment commitments under its firm transportation contracts, is a VIE. WPZ is the primary beneficiary because it has the power over the decisions that most significantly impact Constitution's economic performance. WPZ, as construction agent for Constitution, will build a pipeline connecting our gathering system in Susquehanna County, Pennsylvania, to the Iroquois Gas Transmission and the Tennessee Gas Pipeline systems. WPZ plans to place the project in service in March 2015 and estimates the total cost of the project to be approximately $680 million, which will be funded with capital contributions from WPZ, along with the other equity partners, proportional to ownership interest.

The following table presents amounts included in our Consolidated Balance Sheet that are for the use or obligation of these VIEs:

			March 31,		December 31,
			2013		2012		Classification
			(Millions)
Gulfstar:
	Construction work in process		$	572	$	532	Property, plant, and equipment, at cost
	Accounts payable			88		124	Accounts payable
	Construction retainage			1		-	Accrued liabilities
	Deferred revenue associated with
		customer advance payments		109		109	Other noncurrent liabilities
Constitution:
	Cash and cash equivalents			7		8	Cash and cash equivalents
	Construction work in process			31		24	Property, plant, and equipment, at cost
	Accounts payable			5		4	Accounts payable

WPZ has also identified certain interests in VIEs where it is not the primary beneficiary. These include WPZ'sequity method investments in Laurel Mountain Midstream, LLC (Laurel Mountain) and Discovery Producer Services LLC (Discovery). These entities are considered to be VIEs generally due to contractual provisions that transfer certain risks to customers. As certain significant decisions in the management of these entities require a unanimous vote of all members, WPZ is not the primary beneficiary. Our maximum exposure to loss is limited to the carrying value of our investments, which are $483 million and $357 million for Laurel Mountain and Discovery, respectively, at March 31, 2013.

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Segment Disclosures (Details Textual)	Mar. 31, 2013
Access Midstream Partners G P L L C [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Access Midstream Partners Lp [Member]
Segment Reporting Information [Line Items]
Equity Method Investment, Ownership Percentage	24.00%

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Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventories [Abstract]

Inventories

	March 31,		December 31,
	2013		2012
		(Millions)
Natural gas liquids, olefins, and natural gas in underground storage	$	109	$	97
Materials, supplies, and other		81		78
	$	190	$	175

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Provision (Benefit) for Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Feb. 28, 2013	Sep. 30, 2012
Current :
Federal	$ (11)	$ 21
State	2	4
Foreign	2	21
Total	(7)	46
Deferred:
Federal	82	87
State	13	(3)
Foreign	8	3
Total	103	87
Provision (benefit) for income taxes	96	133
Provision (benefit) for income taxes from continuing operations at federal statutory rate:
Provision (benefit) for income taxes	96	133
Income Tax Contingency [Line Items]
Tax provision (benefit) from income tax examination				2
Cash payment (refund) from income tax examination			12
Tax settlements with WPX	$ 2

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Contingent Liabilities and Commitments

3 Months Ended

Mar. 31, 2013

Contingent Liabilities and Commitments [Abstract]

Contingent Liabilities

Note 12. Contingent Liabilities

Indemnification of WPX Matters

We have agreed to indemnify our former affiliate, WPX and its subsidiaries, related to the following matters. In connection with this indemnification, we have retained applicable accrued asset and liability balances associated with these matters, and as a result, have an indirect exposure to future developments in these matters.

Issues resulting from California energy crisis

WPX's former power business was engaged in power marketing in various geographic areas, including California. Prices charged for power by WPX and other traders and generators in California and other western states in 2000 and 2001 were challenged in various proceedings, including those before the FERC. WPX has entered into settlements with the State of California (State Settlement), major California utilities (Utilities Settlement), and others that substantially resolved each of these issues with these parties.

Although the State Settlement and Utilities Settlement resolved a significant portion of the refund issues among the settling parties, WPX continues to have potential refund exposure to nonsettling parties, including various California end users that did not participate in the Utilities Settlement.WPXand certain California utilities have agreed in principle to resolve WPX's collection of accrued interest from counterparties as well as WPX's payment of accrued interest on refund amounts. As currently contemplated by the parties, the settlement, which is subject to FERC and California regulatory approval, would resolve most of WPX's legal issues arising from the 2000-2001 California Energy Crisis. We currently have a net receivable from WPX related to these matters.

Reporting of natural gas-related information to trade publications

Direct and indirect purchasers of natural gas in various states filed class actions in Nevada federal district court against WPX and others alleging the manipulation of published gas price indices and seeking unspecified amounts of damages.

In 2011, the Nevada district court granted WPX's joint motions for summary judgment to preclude the plaintiffs' state law claims because the federal Natural Gas Act gives the FERC exclusive jurisdiction to resolve those issues. The court also denied the plaintiffs' class certification motion as moot. The plaintiffs appealed the court's ruling and on April 10, 2013, the Ninth Circuit Court of Appeals reversed the district court and remanded the cases to the district court to permit the plaintiffs to pursue their state antitrust claims for natural gas sales that were not subject to FERC jurisdiction under the Natural Gas Act. WPX and the other defendants intend either to request an en banc rehearing before the Ninth Circuit or to seek a writ of certiorari from the U.S. Supreme Court.Because of the uncertainty around the remaining pending unresolved issues, including an insufficient description of the purported classes and other related matters, we cannot reasonably estimate a range of potential exposures at this time. However, it is reasonably possible that the ultimate resolution of these items and our related indemnification obligation could result in future charges that may be material to our results of operations.

Other Legal Matters

Gulf Liquids litigation

Gulf Liquids contracted with Gulsby Engineering Inc. (Gulsby) and Gulsby-Bay (a joint venture between Gulsby and Bay Ltd.) for the construction of certain gas processing plants in Louisiana. National American Insurance Company (NAICO) and American Home Assurance Company provided payment and performance bonds for the projects. In 2001, the contractors and sureties filed multiple cases in Louisiana and Texas against Gulf Liquids and us.

In 2006, at the conclusion of the consolidated trial of the asserted contract and tort claims, the jury returned its actual and punitive damages verdict against us and Gulf Liquids. Based on our interpretation of the jury verdicts, we recorded a charge based on our estimated exposure for actual damages of approximately $68 million plus potential interest of approximately $20 million. In addition, we concluded that it was reasonably possible that any ultimate judgment might have included additional amounts of approximately $199 million in excess of our accrual, which primarily represented our estimate of potential punitive damage exposure under Texas law.

From May through October 2007, the court entered seven post-trial orders in the case (interlocutory orders) which, among other things, overruled the verdict award of tort and punitive damages as well as any damages against us. The court also denied the plaintiffs' claims for attorneys' fees. On January 28, 2008, the court issued its judgment awarding damages against Gulf Liquids of approximately $11 million in favor of Gulsby and approximately $4 million in favor of Gulsby-Bay. Gulf Liquids, Gulsby, Gulsby-Bay, Bay Ltd., and NAICO appealed the judgment. In February 2009, we settled with certain of these parties and reduced our accrued liability as of December 31, 2008, by $43 million, including $11 million of interest. On February 17, 2011, the Texas Court of Appeals upheld the dismissals of the tort and punitive damages claims. As a result, we reduced our accrued liability as of December 31, 2011 by $33 million, including $14 million of interest.The Texas Court of Appeals also reversed and remanded the remaining claims for further proceedings. None of the parties filed a petition for review in the Texas Supreme Court. On May 8, 2012, the Texas Court of Appeals issued its mandate remanding the original breach of contract claims involving Gulsby and attorney fee claims (the remaining claims) to trial court.

Alaska refinery contamination litigation

In January 2010, James West filed a class action lawsuit in state court in Fairbanks, Alaska on behalf of individual property owners whose water contained sulfolane contamination allegedly emanating from the Flint Hills Oil Refinery in North Pole, Alaska. The suit named our subsidiary, Williams Alaska Petroleum Inc. (WAPI),and Flint Hills Resources Alaska, LLC (FHRA),a subsidiary of Koch Industries, Inc.,as defendants. We owned and operated the refinery until 2004 when we sold it to FHRA. We and FHRA have made claims under the pollution liability insurance policy issued in connection with the sale of the North Pole refinery to FHRA.We and FHRA also filed claims against each other seeking, among other things, contractual indemnification alleging that the other party caused the sulfolane contamination.

In 2011, we and FHRA settled the James West claim. Our claims against FHRA and their claims against us remain outstanding. We and FHRA filed motions for summary judgment on the other's claims, but the motions are unlikely to resolve all the outstanding claims. An April 2013 trial date had been scheduled but has been stricken and has not been reset.

We currently estimate that our reasonably possible loss exposure in this matter could range from an insignificant amount up to $32 million, although uncertainties inherent in the litigation process, expert evaluations, and jury dynamics might cause our exposure to exceed that amount.

Independent of the litigation matter described in the preceding paragraphs, the Alaska Department of Environmental Conservation (ADEC) indicated that it views FHRA and us as responsible parties. During the first quarter 2013, ADEC informed FHRA and us that it intends to enter a compliance order to address the environmental remediation of sulfolane and other possible contaminants including cleanup work outside the refinery's boundaries to be performed in 2014. In addition, ADEC will seek from each of FHRA and us an adequate financial performance guarantee for the benefit of ADEC. As such, we will likely be required to contribute some amount, whether to reimburse the State, to reimburse FHRA, or to comply with an ADEC order. Due to the ongoing assessment of the level and extent of sulfolane contamination and the ultimate cost of remediation and division of costs between the named responsible parties, we are unable to estimate a range of liability at this time.

Other

In 2003, we entered into an agreement to sublease certain underground storage facilities to Liberty Gas Storage (Liberty). We have asserted claims against Liberty for prematurely terminating the sublease and for damage caused to the facilities. In February 2011, Liberty asserted a counterclaim for costs in excess of $200 million associated with its use of the facilities. Due to the lack of information currently available, we are unable to evaluate the merits of the counterclaim and determine the amount of any possible liability.

On August 31, 2012, Transco submitted to the FERC a general rate filing principally designed to recover increased costs and to comply with the terms of the settlement in its prior rate proceeding. The new rates became effective March 1, 2013, subject to refund and the outcome of a hearing. We have provided a reserve for rate refunds which we believe is adequate for any refunds that may be required.

Environmental Matters

We are a participant in certain environmental activities in various stages including assessment studies, cleanup operations and remedial processes at certain sites, some of which we currently do not own. We are monitoring these sites in a coordinated effort with other potentially responsible parties, the U.S. Environmental Protection Agency (EPA), and other governmental authorities. We are jointly and severally liable along with unrelated third parties in some of these activities and solely responsible in others. Certain of our subsidiaries have been identified as potentially responsible parties at various Superfund and state waste disposal sites. In addition, these subsidiaries have incurred, or are alleged to have incurred, various other hazardous materials removal or remediation obligations under environmental laws. As of March 31, 2013, we have accrued liabilities totaling $49million for these matters, as discussed below. Our accrual reflects the most likely costs of cleanup, which are generally based on completed assessment studies, preliminary results of studies or our experience with other similar cleanup operations. Certain assessment studies are still in process for which the ultimate outcome may yield significantly different estimates of most likely costs. Any incremental amount in excess of amounts currently accrued cannot be reasonably estimated at this time due to uncertainty about the actual number of contaminated sites ultimately identified, the actual amount and extent of contamination discovered and the final cleanup standards mandated by the EPA and other governmental authorities.

The EPA and various state regulatory agencies routinely promulgate and propose new rules, and issue updated guidance to existing rules.  More recent rules and rulemakings include, but are not limited to, rules for reciprocating internal combustion engine maximum achievable control technology, new air quality standards for ground level ozone, and one hour nitrogen dioxide emission limits.  We are unable to estimate the costs of asset additions or modifications necessary to comply with these new regulations due to uncertainty created by the various legal challenges to these regulations and the need for further specific regulatory guidance.

Continuing operations

Our interstate gas pipelines are involved in remediation activities related to certain facilities and locations for polychlorinated biphenyls, mercury, and other hazardous substances.  These activities haveinvolved the EPA and various state environmental authorities, resulting in our identification as a potentially responsible party at various Superfund waste sites.At March 31, 2013, we have accrued liabilities of $9million for these costs.  We expect that these costs will be recoverable through rates.

We also accrue environmental remediation costs for natural gas underground storage facilities, primarily related to soil and groundwater contamination. At March 31, 2013, we have accrued liabilities totaling $11million for these costs.

Former operations, including operations classified as discontinued

We have potential obligations in connection with assets and businesses we no longer operate. These potential obligations include the indemnification of the purchasers of certain of these assets and businesses for environmental and other liabilities existing at the time the sale was consummated. Our responsibilities relate to the operations of the assets and businesses described below.

• Former agricultural fertilizer and chemical operations and former retail petroleum and refining operations;
• Former petroleum products and natural gas pipelines;
• Former petroleum refining facilities;
• Former exploration and production and mining operations;
• Former electricity and natural gas marketing and trading operations.

At March 31, 2013, we have accrued environmental liabilities of $29 million related to these matters.

Other Divestiture Indemnifications

Pursuant to various purchase and sale agreements relating to divested businesses and assets, we have indemnified certain purchasers against liabilities that they may incur with respect to the businesses and assets acquired from us. The indemnities provided to the purchasers are customary in sale transactions and are contingent upon the purchasers incurring liabilities that are not otherwise recoverable from third parties. The indemnities generally relate to breach of warranties, tax, historic litigation, personal injury, property damage, environmental matters, right of way and other representations that we have provided.

At March 31, 2013, other than as previously disclosed, we are not aware of any material claims involving the indemnities; thus, we do not expect any of the indemnities provided pursuant to the sales agreements to have a material impact on our future financial position. Any claim for indemnity brought against us in the future may have a material adverse effect on our results of operations in the period in which the claim is made.

In addition to the foregoing, various other proceedings are pending against us which are incidental to our operations.

Summary

We have disclosed our estimated range of reasonably possible losses for certain matters above, as well as all significant matters for which we are unable to reasonably estimate a range of possible loss. We estimate that for all other matters for which we are able to reasonably estimate a range of loss, our aggregate reasonably possible losses beyond amounts accrued are immaterial to our expected future annual results of operations, liquidity and financial position. These calculations have been made without consideration of any potential recovery from third parties.