Unsecured Senior Notes (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of Senior Notes

The following summarizes the unsecured senior notes outstanding as of December 31, 2015 (dollars in thousands) (See also Note 20):

	Coupon/ Stated Rate		Effective Rate(1)		Principal Amount			Maturity Date(2)
10 Year Unsecured Senior Notes	5.875	%	5.967	%	$	700,000		October 15, 2019
10 Year Unsecured Senior Notes	5.625	%	5.708	%	700,000			November 15, 2020
10 Year Unsecured Senior Notes	4.125	%	4.289	%	850,000			May 15, 2021
7 Year Unsecured Senior Notes	3.700	%	3.853	%	850,000			November 15, 2018
11 Year Unsecured Senior Notes	3.850	%	3.954	%	1,000,000			February 1, 2023
10.5 Year Unsecured Senior Notes	3.125	%	3.279	%	500,000			September 1, 2023
10.5 Year Unsecured Senior Notes	3.800	%	3.916	%	700,000			February 1, 2024
Total principal					5,300,000
Net unamortized discount					(10,683		)
Total					$	5,289,317

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(1) Yield on issuance date including the effects of discounts on the notes and the amortization of financing costs.

(2) No principal amounts are due prior to maturity.