Other Income (Tables)

12 Months Ended

Dec. 31, 2011

Other Income Tables [Abstract]

Other Income [Table Text Block]

Other income included the following for the years ended December 31:

Millions	2011		2010		2009
Rental income	$	80	$	84	$	73
Net gain on non-operating asset dispositions		43		25		162
Interest income		3		4		5
Early extinguishment of debt		(5)		(21)		-
Non-operating environmental costs and other		(9)		(38)		(45)
Total	$	112	$	54	$	195