Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	6 Months Ended	12 Months Ended
	Jul. 31, 2011	Jan. 31, 2011
Real Estate
Completed rental properties	$ 7,101,431	$ 8,215,425
Projects under construction and development	2,170,855	2,706,235
Land held for development or sale	263,224	244,879
Total Real Estate	9,535,510	11,166,539
Less accumulated depreciation	(1,501,353)	(1,614,399)
Real Estate, net - (variable interest entities $1,855.7 million and $2,627.8 million, respectively)	8,034,157	9,552,140
Cash and equivalents - (variable interest entities $20.0 million and $24.7 million, respectively)	412,348	193,372
Restricted cash and escrowed funds	502,373	720,180
Notes and accounts receivable, net	394,324	403,101
Investments in and advances to affiliates	685,627	431,509
Other assets - (variable interest entities $136.9 million and $166.8 million, respectively)	637,350	759,399
Total Assets	10,666,179	12,059,701
Liabilities
Mortgage debt and notes payable, nonrecourse - (variable interest entities $956.6 million and $1,879.0 million, respectively)	5,621,687	7,207,218
Bank revolving credit facility	0	137,152
Senior and subordinated debt - (variable interest entities $29.0 million as of each period)	1,084,831	773,683
Accounts payable and accrued expenses - (variable interest entities $142.6 million and $150.2 million, respectively)	1,053,778	1,074,042
Cash distributions and losses in excess of investments in unconsolidated investments	282,955	290,492
Deferred income taxes	494,413	489,974
Total Liabilities	8,537,664	9,972,561
Redeemable Noncontrolling Interest	226,936	226,829
Commitments and Contingencies
Common stock - $.33 1/3 par value
Common stock, value	56,419	55,157
Additional paid-in capital	743,973	689,004
Retained earnings	707,927	659,926
Less treasury stock, at cost; 107,545 and 21,324 Class A shares, respectively	(1,874)	(259)
Shareholders' equity before accumulated other comprehensive loss	1,726,445	1,623,828
Accumulated other comprehensive loss	(106,159)	(94,429)
Total Shareholders' Equity	1,620,286	1,529,399
Noncontrolling interest	281,293	330,912
Total Equity	1,901,579	1,860,311
Total Liabilities and Equity	10,666,179	12,059,701
Common Class A
Common stock - $.33 1/3 par value
Common stock, value	49,423	48,084
Total Equity	49,423	48,084
Common Class B
Common stock - $.33 1/3 par value
Common stock, value	6,996	7,073
Total Equity	6,996	7,073
Series A Preferred Stock
Shareholders' Equity
Preferred stock	220,000	220,000
Common stock - $.33 1/3 par value
Total Equity	220,000	220,000
Other Preferred Stock
Shareholders' Equity
Preferred stock