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Partners Equity of the Operating Partnership (Textual) (Details) $ / shares in Units, $ in Millions | Feb. 28, 2018 USD ($) $ / shares
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Earnings Per Common Partnership Unit [Line Items] |
Dividends, Common Stock | $ | $ 32.5
Dividends payable, date to be paid | Apr. 18, 2018
Dividends payable, date of record | Apr. 04, 2018
Dividend Declared [Member] |
Earnings Per Common Partnership Unit [Line Items] |
Dividends Payable, Amount Per Share | $ / shares | $ 0.18
BRANDYWINE OPERATING PARTNERSHIP, L.P. |
Earnings Per Common Partnership Unit [Line Items] |
Dividends, Common Stock | $ | $ 32.5
Dividends payable, date to be paid | Apr. 18, 2018
Dividends payable, date of record | Apr. 04, 2018
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Dividend Declared [Member] |
Earnings Per Common Partnership Unit [Line Items] |
Dividends Payable, Amount Per Share | $ / shares | $ 0.18

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