Indebtedness and Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2013

Indebtedness and Derivative Financial Instruments

Schedule of mortgages and unsecured indebtedness

	2013		2012
Fixed-Rate Debt:
Mortgage notes, including $63,968 and $101,104 net premiums, respectively. Weighted average interest and maturity of 5.62% and 4.2 years at December 31, 2013.	$	7,894,527	$	7,677,204
Unsecured notes, including $38,519 and $38,847 net discounts, respectively. Weighted average interest and maturity of 4.87% and 6.4 years at December 31, 2013.		13,931,705		13,400,154
Total Fixed-Rate Debt		21,826,232		21,077,358
Variable-Rate Debt:
Mortgages notes, at face value. Weighted average interest and maturity of 1.52% and 3.7 years at December 31, 2013.		350,000		442,152
Unsecured Term Loan (see below)		240,000		—
Credit Facility (see below)		1,172,299		1,593,497
Total Variable-Rate Debt		1,762,299		2,035,649
Total Mortgages and Unsecured Indebtedness	$	23,588,531	$	23,113,007

Schedule of principal repayments of indebtedness

Our scheduled principal repayments on indebtedness as of December 31, 2013 are as follows:

2014	$	2,072,529
2015		1,972,833
2016		5,005,080
2017		3,594,748
2018		2,031,818
Thereafter		8,886,074
Total principal maturities		23,563,082
Net unamortized debt premium		25,449
Total mortgages and unsecured indebtedness	$	23,588,531

Schedule of cash paid for interest in each period, net of any amounts capitalized

	For the Year Ended December 31,
	2013		2012		2011
Cash paid for interest	$	1,142,201	$	1,122,223	$	979,436

Schedule of fair values of financial instruments and the related discount rate assumptions

	2013			2012
Fair value of fixed-rate mortgages and unsecured indebtedness	$	23,297		$	23,373
Weighted average discount rates assumed in calculation of fair value for fixed-rate mortgages		3.07	%		3.24	%