Compensation and Benefit Plans (Nonvested Performance Share Activity) (Details) - Equity Awards	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Shares
Beginning balance (in shares) | shares	233,624
Granted (in shares) | shares	158,442
Forfeited (in shares) | shares	(18,250)
Vested (in shares) | shares	(111,008)
Ending balance (in shares) | shares	262,808
Weighted Average Grant Date Fair Value
Beginning balance, weighted average grant date fair value (in dollars per share) | $ / shares	$ 66.80
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	57.70
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	62.51
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	66.06
Ending balance, weighted average grant date fair value (in dollars per share) | $ / shares	$ 61.92
SCE
Shares
Beginning balance (in shares) | shares	120,644
Granted (in shares) | shares	88,983
Forfeited (in shares) | shares	(17,306)
Vested (in shares) | shares	(54,514)
Ending balance (in shares) | shares	137,807
Weighted Average Grant Date Fair Value
Beginning balance, weighted average grant date fair value (in dollars per share) | $ / shares	$ 66.70
Granted, weighted average grant date fair value (in dollars per share) | $ / shares	57.66
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares	62.77
Vested, weighted average grant date fair value (in dollars per share) | $ / shares	66.34
Ending balance, weighted average grant date fair value (in dollars per share) | $ / shares	$ 61.50