Segment and Related Information (Tables)

9 Months Ended

Sep. 30, 2011

Segment and Related Information (Tables) [Abstract]

Reportable segments

Summarized financial information concerning our reportable segments for the three and nine months ended September 30 is shown in the following table (in millions):

	Gross		Intercompany			Net
	Operating		Operating			Operating		Income from
	Revenues		Revenues			Revenues		Operations
Three Months Ended:
September 30, 2011
Eastern	$	822	$	(139	)	$	683	$	146
Midwest		847		(123	)		724		175
Southern		853		(104	)		749		194
Western		841		(114	)		727		154
Wheelabrator		228		(28	)		200		57
Other		462		(23	)		439		(40	)
		4,053		(531	)		3,522		686
Corporate and Other		—		—			—		(143	)
Total	$	4,053	$	(531	)	$	3,522	$	543
September 30, 2010
Eastern	$	755	$	(132	)	$	623	$	138
Midwest		792		(119	)		673		149
Southern		903		(102	)		801		218
Western		809		(113	)		696		146
Wheelabrator		237		(32	)		205		67
Other		248		(11	)		237		(38	)
		3,744		(509	)		3,235		680
Corporate and Other		—		—			—		(136	)
Total	$	3,744	$	(509	)	$	3,235	$	544
Nine Months Ended:
September 30, 2011
Eastern	$	2,326	$	(387	)	$	1,939	$	407
Midwest		2,403		(355	)		2,048		460
Southern		2,553		(307	)		2,246		579
Western		2,456		(336	)		2,120		436
Wheelabrator		664		(89	)		575		112
Other		1,085		(41	)		1,044		(75	)
		11,487		(1,515	)		9,972		1,919
Corporate and Other		—		—			—		(443	)
Total	$	11,487	$	(1,515	)	$	9,972	$	1,476
September 30, 2010
Eastern	$	2,214	$	(385	)	$	1,829	$	390
Midwest		2,266		(336	)		1,930		372
Southern		2,602		(303	)		2,299		624
Western		2,372		(328	)		2,044		416
Wheelabrator		660		(92	)		568		150
Other		688		(30	)		658		(93	)
		10,802		(1,474	)		9,328		1,859
Corporate and Other		—		—			—		(317	)
Total	$	10,802	$	(1,474	)	$	9,328	$	1,542