| Component: (Network and Table) | |
|---|---|
| Network | 2411402 - Disclosure - Accounts payable, accrued expenses, and tenant security deposits (Details) (http://www.are.com/role/AccountsPayableAccruedExpensesAndTenantSecurityDepositsDetails) |
| Table | (Implied) |
| Reporting Entity [Axis] | 0001035443 (http://www.sec.gov/CIK) |
| Payables and Accruals [Abstract] | Period [Axis] | |
|---|---|---|
2016-12-31 | 2015-12-31 | |
Payables and Accruals [Abstract] | ||
Accounts Payable and Other Accrued Liabilities | ||
Below Market Lease, Net | ||
Asset Retirement Obligation | ||
Deferred Rent Liability | ||
Interest Rate Derivative Liabilities, at Fair Value | 3,587,000 | 4,314,000 |
Prepaid Rent and Tenant Security Deposits | ||
Other Accounts Payable and Accrued Liabilities | ||
Accounts Payable and Accrued Liabilities | 731,671,000 | 589,356,000 |