Supplemental Information to Statement of Cash Flows - Cash Flow Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Information [Line Items]
Interest Paid, Net of Capitalized Interest	$ 65,978	$ 77,795	$ 95,527
Capitalized Interest	2,813	1,768	437
Income Taxes (Refunded) Paid	5,433	(295)	1,876
Supplemental Schedule of Non-cash Investing and Financing Activities:
Distributions Payable	10,289	452
Exchange of Limited Partnership Units for General Partnership Units:
Conversion of Limited Partner Units to General Partner Units	0	0	0
Property Transfer To Lender In Satisfaction Of Non Recourse Mortgage Loan
Net Investment in Real Estate	0	0	(3,200)
Prepaid Expenses and Other Assets, Net	0	0	(1,987)
Mortgage Loan Payable, Net	0	0	5,040
Loss from Retirement of Debt	0	0	(147)
Mortgage Loans Payable Assumed in Conjunction with a Property Acquisition	483	12,026	24,417
Notes Receivable Issued in Conjunction with Certain Property Sales	12,520	0	7,029
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	10,402	9,584	6,177
Write-off of Fully Depreciated Assets	(52,800)	(39,208)	(51,434)
General Partner Units
Exchange of Limited Partnership Units for General Partnership Units:
Conversion of Limited Partner Units to General Partner Units	996	4,763	1,109
Limited Partner Units
Exchange of Limited Partnership Units for General Partnership Units:
Conversion of Limited Partner Units to General Partner Units	(996)	(4,763)	(1,109)
Preferred Units, Class [Domain]
Supplemental Schedule of Non-cash Investing and Financing Activities:
Distributions Payable	452	452	4,763
General and Limited Partner Units
Supplemental Schedule of Non-cash Investing and Financing Activities:
Distributions Payable	$ 9,837	$ 0	$ 0