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Dividend Restrictions (Details)
$ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
Disclosure of Restrictions on Dividends, Loans and Advances Disclosure [Abstract]  
Ratio of funded indebtedness to EBITDA (no more than) 2.75
Maximum restricted payments, including dividends $ 300.0
Percentage of eligible carry over of unused restricted dividend payments 100.00%
Increase in maximum restricted payments, including dividends, per annum $ 50.0
Percentage of transfer to surplus fund 10.00%
Required percentage of surplus to capital stock 100.00%
Capital stock $ 5.3
Capital surplus as percent of capital stock 100.00%