Common Equity - Common Stock Dividends (Details) - $ / shares		3 Months Ended				12 Months Ended
	Jan. 19, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Dividends Paid and Payable
Dividends per share (in dollars per share)		$ 0.7275	$ 0.7275	$ 0.7275	$ 0.7275		$ 2.91	$ 2.71	$ 2.53
Subsequent event
Dividends Paid and Payable
Dividends per share (in dollars per share)	$ 0.78
Annualized dividend (in dollars per share)						$ 3.12
Subsequent event | Minimum
Dividends Paid and Payable
Target dividend payout ratio (as a percent)						65.00%
Subsequent event | Maximum
Dividends Paid and Payable
Target dividend payout ratio (as a percent)						70.00%