Debt

The Company does not have indebtedness as debt is incurred by the Operating Partnership. The Company guarantees the Operating Partnership’s unsecured debt including the revolving credit facilities for the full term of such debt.

Debt consists of the following ($ in thousands):



	September 30, 2015			December 31, 2014			Weighted Average Maturity In Years
Unsecured bonds private placement - fixed rate	$	463,776		$	463,443		3.5
Term loan - variable rate	224,383			224,130			1.2
Unsecured bonds - fixed rate	2,402,737			1,915,975			7.0
Unsecured debt, net ⁽¹⁾	3,090,896			2,603,548
Lines of credit, net ⁽²⁾	2,011			242,824
Mortgage notes payable, net ⁽³⁾	$	2,224,513		$	2,234,317		6.3
Total debt	$	5,317,420		$	5,080,689
Weighted average interest rate on fixed rate unsecured and unsecured private placement bonds	3.6		%	3.6		%
Weighted average interest rate on variable rate term loan	2.4		%	2.4		%
Weighted average interest rate on lines of credit	1.7		%	1.8		%
Weighted average interest rate on mortgage notes payable	4.5		%	4.6		%

(1) Includes unamortized premium of $17.3 million and $27.5 million and reduced by unamortized debt issuance costs of $16.4 million and $13.9 million, as of September 30, 2015 and December 31, 2014, respectively.

(2) Lines of credit, net excludes unamortized debt issuance costs of $3.6 million as of September 30, 2015 as the net effect resulted in a debit balance and was reclassified to prepaid expenses and other assets on the condensed consolidated balance sheets. The December 31, 2014 amount includes $3.6 million of unamortized debt issuance costs because the net balance resulted in a credit balance and is presented on a net basis.

(3) Includes unamortized premium of $69.3 million and $83.8 million and reduced by unamortized debt issuance costs of $10.7 million and $11.9 million, as of September 30, 2015 and December 31, 2014, respectively.

The aggregate scheduled principal payments of the Company’s outstanding debt as of September 30, 2015 are as follows (excluding lines of credit) ($ in thousands):



Remaining in 2015	$	7,296
2016	379,707
2017	564,178
2018	320,621
2019	641,393
Thereafter	3,342,742
	$	5,255,937