Borrowings Under Credit Facilities and Commercial Paper Program (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Aggregate Borrowings Under Unsecured Revolving Credit Facility and Commercial Paper

The following information relates to aggregate borrowings under the unsecured revolving credit facility and commercial paper program for the periods presented (dollars in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Balance outstanding at quarter end	$	—		$	1,870,000		$	—		$	1,870,000
Maximum amount outstanding at any month end	$	685,000		$	2,880,000		$	2,100,000		$	2,880,000
Average amount outstanding (total of daily
principal balances divided by days in period)	$	405,165		$	1,807,631		$	999,490		$	1,301,883
Weighted average interest rate (actual interest
expense divided by average borrowings outstanding)	1.57		%	3.08		%	2.08		%	3.11		%