Credit agreements and long-term debt (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Schedule of Changes in Long-term Debt

On June 29, 2017, the Department of Budget and Finance of the State of Hawaii (Department) for the benefit of the Utilities, issued, at par:

	Refunding Series 2017A Special Purpose Revenue Bonds	Refunding Series 2017B Special Purpose Revenue Bonds
Aggregate principal amount	$125 million	$140 million
Fixed coupon interest rate	3.10%	4.00%
Maturity date	May 1, 2026	March 1, 2037
Department loaned the proceeds to:
Hawaiian Electric	$62 million	$100 million
Hawaii Electric Light	$8 million	$20 million
Maui Electric	$55 million	$20 million

Proceeds from the sale were applied to redeem at par bonds previously issued by the Department for the benefit of the Utilities:

	Refunding Series 2007B Special Purpose Revenue Bonds	Series 2007A Special Purpose Revenue Bonds
Aggregate principal amount	$125 million	$140 million
Fixed coupon interest rate	4.60%	4.65%
Maturity date	May 1, 2026	March 1, 2037