Segment and Related Information (Tables)

3 Months Ended

Jun. 30, 2012

Segment and Related Information [Abstract]

Reportable segments

	Gross Operating Revenues		Intercompany Operating Revenues			Net Operating Revenues		Income from Operations
Three Months Ended:
June 30, 2012
Eastern	$	780	$	(148	)	$	632	$	143
Midwest		822		(136	)		686		176
Southern		865		(131	)		734		194
Western		836		(126	)		710		145
Wheelabrator		206		(32	)		174		15
Other		543		(20	)		523		(54	)
		4,052		(593	)		3,459		619
Corporate and Other		—		—			—		(153	)
Total	$	4,052	$	(593	)	$	3,459	$	466
June 30, 2011
Eastern	$	800	$	(136	)	$	664	$	141
Midwest		828		(126	)		702		156
Southern		862		(105	)		757		193
Western		825		(114	)		711		142
Wheelabrator		226		(30	)		196		42
Other		330		(13	)		317		(21	)
		3,871		(524	)		3,347		653
Corporate and Other		—		—			—		(147	)
Total	$	3,871	$	(524	)	$	3,347	$	506
Six Months Ended:
June 30, 2012
Eastern	$	1,516	$	(276	)	$	1,240	$	274
Midwest		1,579		(247	)		1,332		329
Southern		1,713		(246	)		1,467		387
Western		1,632		(238	)		1,394		276
Wheelabrator		413		(62	)		351		19
Other		1,012		(42	)		970		(72	)
		7,865		(1,111	)		6,754		1,213
Corporate and Other		—		—			—		(346	)
Total	$	7,865	$	(1,111	)	$	6,754	$	867
June 30, 2011
Eastern	$	1,504	$	(248	)	$	1,256	$	261
Midwest		1,556		(232	)		1,324		285
Southern		1,700		(203	)		1,497		385
Western		1,615		(222	)		1,393		282
Wheelabrator		436		(61	)		375		55
Other		623		(18	)		605		(35	)
		7,434		(984	)		6,450		1,233
Corporate and Other		—		—			—		(300	)
Total	$	7,434	$	(984	)	$	6,450	$	933