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Operating Units (Tables)

12 Months Ended

Dec. 31, 2012

Future minimum operating lease revneue [Line Items]

Schedule of Future Minimum Rental Receipts [Table Text Block]

Consolidated Anticipated Future Receipts

The following is a summary of the anticipated future receipts of the minimum lease payments receivable under the financing and operating method on a consolidated basis at December 31, 2012:



Year	Amount
	(in millions)
2013	$	89
2014	82
2015	71
2016	69
2017	61
Thereafter	157
	$	529