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Operating Units Other Segments and Other Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Operating Leases, Future Minimum Payments Receivable, Current	89
Operating Leases, Future Minimum Payments Receivable, in Two Years	82
Operating Leases, Future Minimum Payments Receivable, in Three Years	71
Operating Leases, Future Minimum Payments Receivable, in Four Years	69
Operating Leases, Future Minimum Payments Receivable, in Five Years	61
Operating Leases, Future Minimum Payments Receivable, Thereafter	157
Operating Leases, Future Minimum Payments Receivable	529
Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Number of Real Estate Properties	29
Real estate assets pledged to collateralize mortgages	73	77
Viskase [Member]
Segment Reporting Information [Line Items]
Percentage of equity ownership in subsidiary	70.80%
Number of distribution centers	10
Number of manufacturing facilities	8
Percentage of revenues from foreign countries	70.00%
ARI [Member]
Segment Reporting Information [Line Items]
Percentage of equity ownership in subsidiary	55.60%
Group of Customers, Group One [Member] | WestPoint Home [Member]
Segment Reporting Information [Line Items]
Subsidiary's significant customers, percentage of subsidiary's net revenue	63.00%	51.00%	58.00%
Group of Customers, Group two [Member] | ARI [Member]
Segment Reporting Information [Line Items]
Subsidiary's significant customers, percentage of subsidiary's net revenue	64.00%	39.00%	43.00%
MASSACHUSETTS | Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Number of residential units for future development	322
FLORIDA | Real Estate Segment [Member]
Segment Reporting Information [Line Items]
Number of residential units for future development	870

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