Segment Disclosures

9 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Segment Disclosures

Note 13 – Segment Disclosures

Our reportable segments are Williams Partners, Williams NGL & Petchem Services, and Access Midstream Partners. All remaining business activities are included in Other. (See Note 1 – General, Description of Business, and Basis of Presentation.)

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 and total assets by reportable segment.

	Williams Partners		Williams NGL & Petchem Services			Access Midstream Partners		Other		Eliminations			Total
	(Millions)
Three months ended September 30, 2013
Segment revenues:
Service revenues
External	$	731	$	—		$	—	$	5	$	—		$	736
Internal	—		—			—		2		(2		)	—
Total service revenues	731		—			—		7		(2		)	736
Product sales
External	855		32			—		—		—			887
Internal	—		27			—		—		(27		)	—
Total product sales	855		59			—		—		(27		)	887
Total revenues	$	1,586	$	59		$	—	$	7	$	(29	)	$	1,623
Segment profit (loss)	$	405	$	(2	)	$	6	$	3				$	412
Less:
Equity earnings (losses)	31		—			6		—					37
Income (loss) from investments	—		(1		)	—		—					(1		)
Segment operating income (loss)	$	374	$	(1	)	$	—	$	3				376
General corporate expenses													(40		)
Operating income (loss)													$	336
Three months ended September 30, 2012
Segment revenues:
Service revenues
External	$	668	$	2		$	—	$	5	$	—		$	675
Internal	—		—			—		2		(2		)	—
Total service revenues	668		2			—		7		(2		)	675
Product sales
External	1,049		28			—		—		—			1,077
Internal	—		32			—		—		(32		)	—
Total product sales	1,049		60			—		—		(32		)	1,077
Total revenues	$	1,717	$	62		$	—	$	7	$	(34	)	$	1,752
Segment profit (loss)	$	429	$	16		$	—	$	1				$	446
Less:
Equity earnings (losses)	30		—			—		—					30
Segment operating income (loss)	$	399	$	16		$	—	$	1				416
General corporate expenses													(43		)
Operating income (loss)													$	373

	Williams Partners		Williams NGL & Petchem Services			Access Midstream Partners		Other		Eliminations			Total
	(Millions)
Nine months ended September 30, 2013
Segment revenues:
Service revenues
External	$	2,147	$	3		$	—	$	13	$	—		$	2,163
Internal	—		—			—		8		(8		)	—
Total service revenues	2,147		3			—		21		(8		)	2,163
Product sales
External	2,922		115			—		—		—			3,037
Internal	—		103			—		—		(103		)	—
Total product sales	2,922		218			—		—		(103		)	3,037
Total revenues	$	5,069	$	221		$	—	$	21	$	(111	)	$	5,200
Segment profit (loss)	$	1,264	$	56		$	35	$	—				$	1,355
Less:
Equity earnings (losses)	84		—			9		—					93
Income (loss) from investments	—		(3		)	26		—					23
Segment operating income (loss)	$	1,180	$	59		$	—	$	—				1,239
General corporate expenses													(127		)
Operating income (loss)													$	1,112
Nine months ended September 30, 2012
Segment revenues:
Service revenues
External	$	2,005	$	2		$	—	$	12	$	—		$	2,019
Internal	—		—			—		8		(8		)	—
Total service revenues	2,005		2			—		20		(8		)	2,019
Product sales
External	3,497		101			—		—		—			3,598
Internal	—		98			—		—		(98		)	—
Total product sales	3,497		199			—		—		(98		)	3,598
Total revenues	$	5,502	$	201		$	—	$	20	$	(106	)	$	5,617
Segment profit (loss)	$	1,371	$	72		$	—	$	61				$	1,504
Less:
Equity earnings (losses)	87		—			—		1					88
Income (loss) from investments	—		(2		)	—		53					51
Segment operating income (loss)	$	1,284	$	74		$	—	$	7				1,365
General corporate expenses													(133		)
Operating income (loss)													$	1,232
September 30, 2013
Total assets	$	21,633	$	1,543		$	2,162	$	1,839	$	(722	)	$	26,455
December 31, 2012
Total assets	$	19,709	$	1,134		$	2,187	$	1,782	$	(485	)	$	24,327