Preferred Stock - PAC (Details)	12 Months Ended
	Dec. 31, 2021 payment $ / shares shares	Dec. 31, 2020 $ / shares shares
Class of Stock [Line Items]
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Preferred stock, shares issued	2,000,000	4,000,000
Preferred stock, shares outstanding	2,000,000	4,000,000
PAC
Class of Stock [Line Items]
Number of full quarterly dividend payments | payment	4
Preferred Stock Class, Serial Preferred | PAC
Class of Stock [Line Items]
Preferred stock, shares authorized	3,500,000	3,500,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 100	$ 100
Preferred stock, shares issued	24,000	24,000
Preferred stock, shares outstanding	24,000	24,000
Preferred Stock Class, No Par Serial Preferred | PAC
Class of Stock [Line Items]
Preferred stock, shares authorized	16,000,000	16,000,000
Preferred Stock Class, 5 Percent Preferred | PAC
Class of Stock [Line Items]
Preferred stock, shares authorized	127,000	127,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Preferred stock, dividend rate	5.00%	5.00%
Minimum | Preferred Stock Class, Serial Preferred | PAC
Class of Stock [Line Items]
Preferred stock, dividend rate	6.00%
Maximum | Preferred Stock Class, Serial Preferred | PAC
Class of Stock [Line Items]
Preferred stock, dividend rate	7.00%