Receivables (Receivables Sold Under The Agreement) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Receivables [Line Items]
Fair value of deferred proceeds	$ 175	$ 185
IPL [Member]
Receivables [Line Items]
Fair value of deferred proceeds	175	185
Receivables Sold [Member] | IPL [Member]
Receivables [Line Items]
Customer accounts receivable	148	145
Unbilled utility revenues	100	132
Receivables sold to third party	248	277
Less: cash proceeds	60	80
Deferred proceeds	188	197
Less: allowance for expected credit losses	13	12
Fair value of deferred proceeds	$ 175	$ 185