Chapter 11 Reorganization (Narrative) (Details) (USD $)	9 Months Ended			0 Months Ended
	Sep. 30, 2013 lease	Jul. 02, 2013	Apr. 15, 2013 debtor node	Oct. 10, 2013 Subsequent Event [Member] claim	Oct. 10, 2013 Subsequent Event [Member] Claims Filed After Bar Date [Member] claim	May 24, 2013 May 31, 2013 Deadline [Member]	Jul. 02, 2013 July 8,2013 Deadline [Member]
Reorganization [Line Items]
Assumed non-residential real property leases (leases)	554
Assigned non-residential real property leases (leases)	1
Terminated non-residential real property leases (leases)	1
Ground leases rejected (leases)	12
Ground leases which must be assumed or rejected by an extended date (leases)	3
Number claims filed (claims)				13,500	360
Amount of claims filed				$ 291,000,000,000	$ 58,000,000
Amount of claims expunged by bankruptcy court				119,000,000,000
Amount of claims under review by management				663,000,000
Workgroups covered by Collective Bargaining Agreements	9
Number of debtors (debtors)			20
Number of nodes (nodes)			3
Unsecured claims threshold						190,000,000	190,000,000
Plan of Reorganization - additional estimated allowed claim amounts	$ 170,000,000
Amount of Reorganized Debt held by a Single Holder, Applicable Percentage		4.50%