Balance Sheet Parenthetical (Parentheticals) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Par value	$ 0.001	$ 0.001
Common shares authorized	283,987,000	283,987,000
Common shares issued	147,577,984	148,557,270
Common shares outstanding	147,577,984	148,557,270
Redeemable Preferred Stock [Member]
Redeemable stock, preferred units outstanding	301,483	301,483
Liberty Property Limited Partnership [Member]
Common shares outstanding	147,577,984	148,557,270
Common units outstanding	3,539,075	3,556,566
Liberty Property Limited Partnership [Member] | Redeemable Preferred Stock [Member]
Redeemable stock, preferred units outstanding	301,483	301,483