Regulatory Matters - Summary of Utilities Rate Plans (RECO) (Details) - RECO - USD ($) $ in Thousands		1 Months Ended	23 Months Ended
	Jan. 01, 2022	Jan. 31, 2022	Dec. 31, 2021
Public Utilities, General Disclosures [Line Items]
Regulatory liabilities, amortization period	3 years
Amortization to income of net regulatory assets	$ 9,200		$ 4,800
Regulatory assets, amortization period (in years)	3 years		4 years
Weighted average cost of capital (after-tax)	$ 262,800		$ 229,900
Weighted average cost of capital (after-tax) (percent)		7.08%	7.11%
Authorized return on common equity (percent)		9.60%	9.50%
Cost of long-term debt (percent)		4.74%	4.88%
Common equity ratio (percent)		48.51%	48.32%
Tropical Storm Henri
Public Utilities, General Disclosures [Line Items]
Amortization to income of net regulatory assets	$ 2,400
Regulatory assets, amortization period (in years)	3 years
Rate Plan for Year 1
Public Utilities, General Disclosures [Line Items]
Base rate changes		$ 9,650	$ 12,000
Actual return on common equity (percent)	9.60%		5.40%
Rate Plan for Year 2
Public Utilities, General Disclosures [Line Items]
Actual return on common equity (percent)	9.70%		2.30%
Period 1
Public Utilities, General Disclosures [Line Items]
Amortizations to income of net regulatory (assets) and liabilities	$ 200
Regulatory liabilities, amortization period	3 years
Period 2
Public Utilities, General Disclosures [Line Items]
Amortizations to income of net regulatory (assets) and liabilities	$ 10,000