XML 78 R30.htm IDEA: XBRL DOCUMENT v2.4.0.8

Real Estate Investments Real Estate Investments (Tables)

9 Months Ended

Sep. 30, 2013

Real Estate [Abstract]

Gross Carrying Value Of Company's Properties [Table Text Block]

As of September 30, 2013 and December 31, 2012, the gross carrying value of the Company’s Properties was as follows (in thousands):

	September 30, 2013				December 31, 2012
Land	$	664,952			$	662,107
Building and improvements	3,465,544				3,576,065
Tenant improvements	501,414				487,997
	$	4,631,910			$	4,726,169

X

- Definition

Schedule of rental properties.

+ References

No definition available.

+ Details

Name:	bdn_ScheduleOfRentalPropertiesTableTextBlock
Namespace Prefix:	bdn_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_RealEstateAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration