Segment Information - Reconciliation to Consolidated Financial Statements (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues		$ 7,915		$ 7,322		$ 17,805	$ 16,069
Revenue from Related Parties		0		1		0	2
Depreciation and Amortization		1,666		1,001		3,363	2,023
Operating Expenses		7,561		6,769		17,643	14,298
Interest expense, net		396		427		783	837
Income (Loss) before income taxes		551		794		268	879
Income taxes		74		219		55	(75)
Net income (loss)		476	$ (264)	574	$ 376	211	950
Capital expenditures		1,900		1,757		4,040	3,773
Assets	[1]	129,396				129,396		$ 129,317
Exelon Generation Co L L C [Member]
Segment Reporting Information [Line Items]
Revenues		4,153		3,880		9,712	8,613
Revenue from Related Parties		254		271		549	601
Income (Loss) before income taxes		124		860		(823)	313
Income taxes		110		329		(70)	(59)
Net income (loss)		13	(769)	529	(161)	(756)	368
Capital expenditures						719	930
Assets	[2]	45,821				45,821		48,094
Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenues		1,140		1,016		2,384	2,187
Revenue from Related Parties		4		3		7	7
Income (Loss) before income taxes		138		7		273	126
Income taxes		(3)		(87)		5	(76)
Net income (loss)		141	$ 128	94	$ 108	269	202
Capital expenditures						889	686
Assets	[3]	24,235				24,235		23,736
Commonwealth Edison Co Affiliate [Member] | Exelon Generation Co L L C [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		75		80		153	170
PECO Energy Co Affiliate [Member] | Exelon Generation Co L L C [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		41		41		83	78
Baltimore Gas And Electric Company Affiliate [Member] | Exelon Generation Co L L C [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		58		70		130	169
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		(794)		(760)		(1,594)	(1,587)
Revenue from Related Parties		(794)		(760)		(1,594)	(1,585)
Depreciation and Amortization		0		0		0	0
Operating Expenses		(768)		(748)		(1,549)	(1,564)
Interest expense, net		0		0		0	0
Income (Loss) before income taxes		0		1		1	2
Income taxes		0		0		0	0
Net income (loss)		0		1		1	2
Capital expenditures		0		0		0	0
Assets		(10,168)				(10,168)		(10,165)
Intersegment Eliminations [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenues		(95)		(98)		(190)	(190)
Revenue from Related Parties		(95)		(98)		(190)	(190)
Depreciation and Amortization		0		0		0	0
Operating Expenses		(95)		(98)		(190)	(190)
Interest expense, net		0		0		0	0
Income (Loss) before income taxes		0		0		0	0
Income taxes		0		0		0	0
Net income (loss)		0		0		0	0
Capital expenditures		0		0		0	0
Assets		(69)				(69)		(33)
Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		4,153		3,880		9,712	8,613
Depreciation and Amortization		930		300		1,869	604
Operating Expenses		4,469		3,547		11,141	7,947
Interest expense, net		76		87		148	197
Income (Loss) before income taxes		124		860		(823)	313
Income taxes		110		329		(70)	(59)
Net income (loss)		13		529		(756)	368
Capital expenditures		337		372		719	930
Assets		45,821				45,821		48,094
Exelon Generation Co L L C [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		254		271		549	601
Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		1,517		1,417		3,052	2,856
Depreciation and Amortization		296		274		589	547
Operating Expenses		1,196		1,345		2,406	2,497
Interest expense, net		98		98		193	192
Income (Loss) before income taxes		238		(15)		475	189
Income taxes		46		46		85	82
Net income (loss)		192		(61)		390	107
Capital expenditures		549		523		1,162	1,029
Assets		35,324				35,324		34,466
Commonwealth Edison Co [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		5		11		11	16
PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		693		681		1,582	1,493
Depreciation and Amortization		87		88		173	173
Operating Expenses		552		618		1,231	1,242
Interest expense, net		42		36		80	71
Income (Loss) before income taxes		106		32		283	187
Income taxes		2		(7)		12	9
Net income (loss)		104		39		271	178
Capital expenditures		282		253		577	512
Assets		13,491				13,491		12,531
PECO Energy Co [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		2		2		4	4
Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		682		616		1,656	1,554
Depreciation and Amortization		141		129		293	272
Operating Expenses		620		573		1,372	1,263
Interest expense, net		34		32		67	64
Income (Loss) before income taxes		37		17		233	237
Income taxes		(8)		(22)		(21)	18
Net income (loss)		45		39		254	219
Capital expenditures		284		265		620	548
Assets		12,186				12,186		11,650
Baltimore Gas and Electric Company [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		7		4		13	10
Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		1,140		1,016		2,384	2,187
Depreciation and Amortization		194		191		404	385
Operating Expenses		955		956		2,013	1,955
Interest expense, net		67		67		134	134
Income (Loss) before income taxes		138		7		273	126
Income taxes		(3)		(87)		5	(76)
Net income (loss)		141		94		269	202
Capital expenditures		433		310		889	686
Assets		24,235				24,235		23,736
Pepco Holdings LLC [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		4		3		7	7
Potomac Electric Power Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		523		494		1,076	1,039
Depreciation and Amortization		96		92		199	186
Operating Expenses		429		436		895	899
Interest expense, net		35		34		69	68
Income (Loss) before income taxes		72		33		137	90
Income taxes		(3)		(24)		3	(19)
Net income (loss)		75		57		134	109
Capital expenditures		219		144		439	324
Assets		9,588				9,588		9,264
Potomac Electric Power Company [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		1		1		3	3
Delmarva Power and Light Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		298		267		680	617
Depreciation and Amortization		51		47		104	94
Operating Expenses		255		263		564	547
Interest expense, net		16		15		30	31
Income (Loss) before income taxes		31		(9)		92	44
Income taxes		1		(28)		6	(20)
Net income (loss)		30		19		86	64
Capital expenditures		99		89		211	184
Assets		5,229				5,229		5,140
Delmarva Power and Light Company [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		2		2		4	4
Atlantic City Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenues		319		256		629	532
Depreciation and Amortization		40		44		87	86
Operating Expenses		269		258		552	509
Interest expense, net		14		15		29	29
Income (Loss) before income taxes		36		(15)		50	(1)
Income taxes		(1)		(33)		(1)	(32)
Net income (loss)		37		18		51	31
Capital expenditures		116		77		239	178
Assets		4,473				4,473		4,286
Atlantic City Electric Company [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		1		1		1	1
Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenues		524		472		1,013	953
Depreciation and Amortization		18		19		35	42
Operating Expenses		537		478		1,029	958
Interest expense, net		79		107		161	179
Income (Loss) before income taxes		(92)		(108)		(174)	(175)
Income taxes		(73)		(40)		44	(49)
Net income (loss)		(19)		(67)		(218)	(126)
Capital expenditures		15		34		73	68
Assets		8,507				8,507		9,005
Corporate and Other [Member] | Corporate, Non-Segment [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenues		95		97		189	189
Depreciation and Amortization		7		8		14	19
Operating Expenses		97		97		192	190
Interest expense, net		2		3		6	6
Income (Loss) before income taxes		(1)		(2)		(6)	(7)
Income taxes		0		(2)		(3)	(5)
Net income (loss)		(1)		0		(2)	(2)
Capital expenditures		(1)		0		0	0
Assets		5,014				5,014		$ 5,079
Corporate and Other [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		522		470		1,010	949
Corporate and Other [Member] | Intersegment Eliminations [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Related Parties		95		97		189	189
Competitive businesses electric revenues [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		3,497		3,146		7,389	6,571
Competitive businesses electric revenues [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(250)		(268)		(546)	(594)
Competitive businesses electric revenues [Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		3,747		3,414		7,935	7,165
Competitive businesses electric revenues [Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses electric revenues [Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses electric revenues [Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses electric revenues [Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses electric revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses natural gas revenues Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		507		353		1,833	1,022
Competitive businesses natural gas revenues Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	(3)
Competitive businesses natural gas revenues Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		507		353		1,833	1,025
Competitive businesses natural gas revenues Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses natural gas revenues Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses natural gas revenues Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses natural gas revenues Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses natural gas revenues Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Competitive businesses other revenues [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		(104)		112		(57)	421
Competitive businesses other revenues [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		(3)		(1)		(1)	(2)
Competitive businesses other revenues [Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		(101)		113		(56)	423
Competitive businesses other revenues [Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		0		0		0	0
Competitive businesses other revenues [Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		0		0		0	0
Competitive businesses other revenues [Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		0		0		0	0
Competitive businesses other revenues [Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		0		0		0	0
Competitive businesses other revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Competitive businesses other revenues		0		0		0	0
Rate-regulated electric revenues [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		3,787		3,475		7,775	7,222
Rate-regulated electric revenues [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		1,071		1,047		2,195	2,133
Rate-regulated electric revenues [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(11)		(15)		(21)	(27)
Rate-regulated electric revenues [Member] | Intersegment Eliminations [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(3)		(4)		(7)	(8)
Rate-regulated electric revenues [Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated electric revenues [Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		1,517		1,417		3,052	2,856
Rate-regulated electric revenues [Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		610		586		1,271	1,189
Rate-regulated electric revenues [Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		558		504		1,190	1,118
Rate-regulated electric revenues [Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		1,113		983		2,283	2,086
Rate-regulated electric revenues [Member] | Potomac Electric Power Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		523		494		1,076	1,039
Rate-regulated electric revenues [Member] | Delmarva Power and Light Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		274		237		585	523
Rate-regulated electric revenues [Member] | Atlantic City Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		319		256		629	532
Rate-regulated electric revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated electric revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		228		236		865	832
Rate-regulated natural gas revenues [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		24		30		94	94
Rate-regulated natural gas revenues [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(3)		(1)		(7)	(2)
Rate-regulated natural gas revenues [Member] | Intersegment Eliminations [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		83		95		311	304
Rate-regulated natural gas revenues [Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		124		112		466	436
Rate-regulated natural gas revenues [Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		24		30		95	94
Rate-regulated natural gas revenues [Member] | Potomac Electric Power Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | Delmarva Power and Light Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		24		30		95	94
Rate-regulated natural gas revenues [Member] | Atlantic City Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Rate-regulated natural gas revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	1
Shared service and other revenues [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(527)		(475)		(1,019)	(959)
Shared service and other revenues [Member] | Intersegment Eliminations [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		(92)		(94)		(183)	(182)
Shared service and other revenues [Member] | Exelon Generation Co L L C [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Commonwealth Edison Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | PECO Energy Co [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Baltimore Gas and Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Pepco Holdings LLC [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		3		3		6	7
Shared service and other revenues [Member] | Potomac Electric Power Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Delmarva Power and Light Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Atlantic City Electric Company [Member] | Operating Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		0		0		0	0
Shared service and other revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		524		472		1,013	953
Shared service and other revenues [Member] | Corporate and Other [Member] | Corporate, Non-Segment [Member] | Pepco Holdings LLC [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		$ 95		$ 97		$ 189	$ 189

[1] Exelon’s consolidated assets include $10,093 million and $10,200 million at June 30, 2021 and December 31, 2020, respectively, of certain VIEs that can only be used to settle the liabilities of the VIE. Exelon’s consolidated liabilities include $3,578 million and $3,598 million at June 30, 2021 and December 31, 2020, respectively, of certain VIEs for which the VIE creditors do not have recourse to Exelon. See Note 17 — Variable Interest Entities for additional information.

[2] Generation’s consolidated assets include $10,077 million and $10,182 million at June 30, 2021 and December 31, 2020, respectively, of certain VIEs that can only be used to settle the liabilities of the VIE. Generation’s consolidated liabilities include $3,563 million and $3,572 million at June 30, 2021 and December 31, 2020, respectively, of certain VIEs for which the VIE creditors do not have recourse to Generation. See Note 17 — Variable Interest Entities for additional information.

[3] PHI’s consolidated total assets include $16 million and $18 million at June 30, 2021 and December 31, 2020, respectively, of PHI's consolidated VIE that can only be used to settle the liabilities of the VIE. PHI’s consolidated total liabilities include $15 million and $26 million at June 30, 2021 and December 31, 2020, respectively, of PHI's consolidated VIE for which the VIE creditors do not have recourse to PHI. See Note 17 — Variable Interest Entities for additional information.