Summary of Significant Accounting and Reporting Policies - Noncontrolling Interests (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of Class B noncontrolling interests – net	$ 176	$ 1,112	$ 890
Acquisition of subsidiaries with differential membership interests	165	2,012
Acquisition of subsidiaries with noncontrolling interests	72		2,494
Acquisition of subsidiary with noncontrolling interests	72
Related party note receivable		2	2
Other comprehensive income	2	2	2
Distributions, primarily to related parties	(432)	(382)	(424)
Changes in non-economic ownership interests	11	1	127
Other differential membership investment activity	315	243	39
Buyout of Class B noncontrolling interest investors	(972)		(160)	[1]
Sale Of Subsidiary With Noncontrolling Ownership Interest	(80)
Noncontrolling Ownership Interests In Subsidiaries [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances, beginning of period	5,031	3,783	3,550
Sale of Class B noncontrolling interests – net	177	1,115	893
Net Income (Loss) Attributable to Noncontrolling Interest	333	296	298
Payments to Class B noncontrolling interest investors	(146)	(163)	(80)
Buyout of Class B noncontrolling interest investors	(972)		(879)
Other – net	(6)	0	1
Balances, end of period	4,417	5,031	3,783
Differential Membership Interests [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances, beginning of period	4,359	3,150	1,759
Acquisition of subsidiaries with differential membership interests	165	1,494
Acquisition of subsidiaries with noncontrolling interests		0
Acquisition of subsidiary with noncontrolling interests	0		1,618
Net Income (Loss) Attributable to Noncontrolling Interest	(696)	(573)	(313)
Differential membership investment contributions, net of distributions	118	101	39
Sale of differential membership interests	92		48
Reclassification Of Redeemable Noncontrolling Interests	105	330
Reclassification of Noncontrolling Interests To Current Other Liabilities		(142)
Other – net	0	(1)	(1)
Balances, end of period	4,143	4,359	3,150
Noncontrolling Indirect Noncontrolling Ownership Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances, beginning of period	891	(38)	(14)
Acquisition of subsidiaries with noncontrolling interests		518
Acquisition of subsidiary with noncontrolling interests	72		25
Related party note receivable		2	2
Net Income (Loss) Attributable to Noncontrolling Interest	303	788	269
Other comprehensive income	1	1	2
Distributions, primarily to related parties	(391)	(346)	(322)
Changes in non-economic ownership interests	0	0	0
Reclassification of Noncontrolling Interests To Current Other Liabilities		(25)
Other – net	23	(9)	0
Balances, end of period	899	891	(38)
Other Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances, beginning of period	1,065	966	58
Acquisition of subsidiaries with noncontrolling interests		0
Acquisition of subsidiary with noncontrolling interests	0		851
Related party note receivable			0
Net Income (Loss) Attributable to Noncontrolling Interest	74	124	33
Other comprehensive income	0	0	0
Distributions, primarily to related parties	(41)	(36)	(102)
Changes in non-economic ownership interests	11	1	127
Sale Of Subsidiary With Noncontrolling Ownership Interest	(80)
Other – net	0	10	(1)
Balances, end of period	1,029	1,065	966
Non-controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balances, beginning of period	11,346	7,861	5,353
Sale of Class B noncontrolling interests – net	177	1,115	893
Acquisition of subsidiaries with differential membership interests	165	1,494
Acquisition of subsidiaries with noncontrolling interests		518
Acquisition of subsidiary with noncontrolling interests			2,494
Related party note receivable		2	2
Net Income (Loss) Attributable to Noncontrolling Interest	14	635	287
Other comprehensive income	1	1	2
Distributions, primarily to related parties	(432)	(382)	(424)
Changes in non-economic ownership interests	11	1	127
Differential membership investment contributions, net of distributions	118	101	39
Payments to Class B noncontrolling interest investors	(146)	(163)	(80)
Sale of differential membership interests	92		48
Buyout of Class B noncontrolling interest investors			(879)
Reclassification Of Redeemable Noncontrolling Interests	105	330
Reclassification of Noncontrolling Interests To Current Other Liabilities		(167)
Sale Of Subsidiary With Noncontrolling Ownership Interest	(80)
Other – net	17	0	(1)
Balances, end of period	10,488	11,346	7,861
Non-controlling Interests
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Sale of Class B noncontrolling interests – net	177	1,115	893
Acquisition of subsidiaries with differential membership interests	165	2,012
Acquisition of subsidiaries with noncontrolling interests	72		2,494
Related party note receivable		2	2
Other comprehensive income	1	1	2
Distributions, primarily to related parties	(432)	(382)	(424)
Changes in non-economic ownership interests	11	1	127
Other differential membership investment activity	315	$ 264	39
Buyout of Class B noncontrolling interest investors	(972)		$ (879)	[1]
Sale Of Subsidiary With Noncontrolling Ownership Interest	$ (80)

[1] Reflects the issuance of approximately 7.3 million NEP common units and recognition of a $105 million deferred tax asset in connection with the exercise of the Class B noncontrolling interest buyout right relating to NEP Renewables discussed in Note 14 – Class B Noncontrolling Interests.