XML 70 R38.htm IDEA: XBRL DOCUMENT v3.22.4
Borrowings Under Credit Facilities and Commercial Paper Program (Tables)
12 Months Ended
Dec. 31, 2022
Line of Credit Facility [Abstract]  
Aggregate Borrowings Under Unsecured Revolving Credit Facility and Commercial Paper Program The following information relates to aggregate borrowings under the unsecured revolving credit facility and commercial paper program for the periods presented (dollars in thousands):
 Year Ended December 31,
 202220212020
Balance outstanding at year end$— $325,000 $— 
Maximum amount outstanding at any month end$1,565,000 $994,000 $2,100,000 
Average amount outstanding (total of daily principal balances
divided by days in period)$766,167 $384,418 $497,014 
Weighted-average interest rate (actual interest expense divided
by average borrowings outstanding)1.75 %0.33 %2.09 %