Selected Quarterly Financial Information (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	Quarter Ended
2014	December 31	September 30	June 30	March 31
Rental and related revenue	$238,014	$231,322	$233,518	$237,350
General contractor and service fee revenue	$39,429	$59,739	$69,512	$55,820
General Partner
Net income (loss) attributable to common shareholders	$(3,011)	$61,533	$127,688	$18,683
Basic income (loss) per common share	$(0.01)	$0.18	$0.38	$0.06
Diluted income (loss) per common share	$(0.01)	$0.18	$0.38	$0.06
Weighted average common shares	342,853	341,165	331,753	327,106
Weighted average common shares and potential dilutive securities	342,853	345,826	336,414	331,716
Partnership
Net income (loss) attributable to common unitholders	$(3,122)	$62,328	$129,381	$18,933
Basic income (loss) per Common Unit	$(0.01)	$0.18	$0.38	$0.06
Diluted income (loss) per Common Unit	$(0.01)	$0.18	$0.38	$0.06
Weighted average Common Units	346,934	345,545	336,139	331,493
Weighted average Common Units and potential dilutive securities	346,934	345,826	336,414	331,716
2013	December 31	September 30	June 30	March 31
Rental and related revenue	$226,575	$221,655	$215,308	$209,879
General contractor and service fee revenue	$45,592	$62,807	$50,793	$47,404
General Partner
Net income (loss) attributable to common shareholders	$69,574	$(6,067)	$61,494	$28,043
Basic income (loss) per common share	$0.21	$(0.02)	$0.19	$0.09
Diluted income (loss) per common share	$0.21	$(0.02)	$0.19	$0.09
Weighted average common shares	326,059	324,895	322,489	314,936
Weighted average common shares and potential dilutive securities	330,834	324,895	327,098	319,571
Partnership
Net income (loss) attributable to common unitholders	$70,526	$(6,159)	$62,336	$28,435
Basic income (loss) per Common Unit	$0.21	$(0.02)	$0.19	$0.09
Diluted income (loss) per Common Unit	$0.21	$(0.02)	$0.19	$0.09
Weighted average Common Units	330,446	329,283	326,877	319,341
Weighted average Common Units and potential dilutive securities	330,834	329,283	327,098	319,571