Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016
Assets, Current [Abstract]
Cash and cash equivalents		$ 536	$ 635
Restricted cash and cash equivalents		252	253
Accounts receivable, net
Customer		3,825	4,158
Other		958	1,201
Mark-to-market derivative assets		833	917
Unamortized energy contract assets		84	88
Inventories, net
Fossil fuel and emission allowances		334	364
Materials and supplies		1,267	1,274
Prepaid Taxes		1,250	1,250
Regulatory assets		1,293	1,342
Other		1,600	930
Total current assets		12,232	12,412
Property, plant and equipment, net		72,748	71,555
Deferred debits and other assets
Regulatory assets		9,945	10,046
Nuclear decommissioning trust funds		12,641	11,061
Investments		638	629
Goodwill		6,677	6,677
Mark-to-market derivative assets		464	492
Pledged assets for Zion Station decommissioning		75	113
Unamortized energy contract assets		419	447
Other		1,265	1,472
Total deferred debits and other assets		32,124	30,937
Total assets		117,104	114,904
Liabilities, Current [Abstract]
Short-term borrowings		1,757	1,267
Long-term debt due within one year		3,619	2,430
Accounts payable		3,134	3,441
Accrued expenses		2,878	3,460
Payables to affiliates		8	8
Unamortized energy contract liabilities		340	407
Regulatory liabilities		574	602
Mark-to-market derivative liabilities (current liabilities)		244	282
Energy Marketing Accounts Payable		308	428
Accounts Payable and Accrued Liabilities, Current		126	151
Other		977	981
Total current liabilities		13,965	13,457
Long-term debt		30,315	31,575
Long-term debt to financing trusts		641	641
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		18,521	18,138
Asset Retirement Obligations, Noncurrent		9,848	9,111
Pension obligations		4,082	4,248
Non-pension postretirement benefit obligations		1,955	1,848
Spent nuclear fuel obligation		1,139	1,024
Regulatory liabilities		4,398	4,187
Mark-to-market derivative liabilities (noncurrent liabilities)		417	392
Unamortized energy contract liabilities		705	830
Payable for Zion Station decommissioning		0	14
Other		1,828	1,827
Total deferred credits and other liabilities		42,893	41,619
Total liabilities	[1]	87,814	87,292
Commitments and contingencies
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		18,860	18,794
Treasury stock, at cost (2 shares and 35 shares at June 30, 2017 and December 31, 2016, respectively)		(123)	(2,327)
Retained earnings		11,442	12,030
Accumulated other comprehensive loss, net		(2,633)	(2,660)
Total shareholders’ equity		27,546	25,837
Member’s equity
Noncontrolling interests		1,744	1,775
Total equity		29,290	27,612
Total liabilities and shareholders’ equity		117,104	114,904
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities	[2]	293	502
Variable Interest Entity, Primary Beneficiary [Member]
Assets, Current [Abstract]
Cash and cash equivalents	[3],[4]	68	150
Restricted cash and cash equivalents	[3],[4]	55	59
Accounts receivable, net
Customer	[3],[4]	106	371
Other	[3],[4]	24	48
Mark-to-market derivative assets	[3],[4]	0	31
Inventories, net
Materials and supplies	[3],[4]	193	199
Other	[3],[4]	38	50
Total current assets	[3],[4]	484	908
Property, plant and equipment, net	[3],[4]	5,293	5,415
Deferred debits and other assets
Nuclear decommissioning trust funds	[3],[4]	2,341	2,185
Goodwill	[3],[4]	0	47
Mark-to-market derivative assets	[3],[4]	0	23
Other	[3],[4]	267	315
Total assets	[3],[4]	8,385	8,893
Liabilities, Current [Abstract]
Long-term debt due within one year	[3],[4]	191	181
Accounts payable	[3],[4]	80	269
Accrued expenses	[3],[4]	48	119
Unamortized energy contract liabilities	[3],[4]	16	15
Mark-to-market derivative liabilities (current liabilities)	[3],[4]	0	60
Other	[3],[4]	5	30
Total current liabilities	[3],[4]	340	674
Long-term debt	[3],[4]	616	641
Deferred credits and other liabilities
Asset Retirement Obligations, Noncurrent	[3],[4]	1,954	1,904
Pension obligations	[3],[4],[5]	0	9
Unamortized energy contract liabilities	[3],[4]	13	22
Other	[3],[4]	98	106
Total liabilities	[3],[4]	3,021	3,356
Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Deferred debits and other assets
Total assets		8,385	8,893
Deferred credits and other liabilities
Total liabilities		3,021	3,356
Exelon Generation Co L L C [Member]
Assets, Current [Abstract]
Cash and cash equivalents		265	290
Restricted cash and cash equivalents		166	158
Accounts receivable, net
Customer		2,242	2,433
Other		447	558
Mark-to-market derivative assets		833	917
Receivables from affiliates		143	156
Unamortized energy contract assets		84	88
Inventories, net
Fossil fuel and emission allowances		272	292
Materials and supplies		901	935
Other		1,241	701
Total current assets		6,594	6,528
Property, plant and equipment, net		25,261	25,585
Deferred debits and other assets
Nuclear decommissioning trust funds		12,641	11,061
Investments		426	418
Goodwill		47	47
Mark-to-market derivative assets		453	476
Prepaid pension asset		1,590	1,595
Pledged assets for Zion Station decommissioning		75	113
Unamortized energy contract assets		418	447
Deferred Tax Assets, Net, Noncurrent		5	16
Other		620	688
Total deferred debits and other assets		16,275	14,861
Total assets		48,130	46,974
Liabilities, Current [Abstract]
Short-term borrowings		716	699
Long-term debt due within one year		1,828	1,117
Accounts payable		1,527	1,610
Accrued expenses		722	989
Payables to affiliates		132	137
Unamortized energy contract liabilities		61	72
Other Short-term Borrowings		251	55
Mark-to-market derivative liabilities (current liabilities)		225	263
Energy Marketing Accounts Payable		308	428
Other		294	313
Total current liabilities		6,064	5,683
Long-term debt		7,010	7,202
Long-term debt to affiliate		916	922
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		5,578	5,585
Asset Retirement Obligations, Noncurrent		9,655	8,922
Non-pension postretirement benefit obligations		922	930
Spent nuclear fuel obligation		1,139	1,024
Due to Affiliate, Noncurrent		2,871	2,608
Mark-to-market derivative liabilities (noncurrent liabilities)		180	153
Unamortized energy contract liabilities		67	80
Payable for Zion Station decommissioning		0	14
Other		598	595
Total deferred credits and other liabilities		21,010	19,911
Total liabilities	[6]	35,000	33,718
Commitments and contingencies
Stockholders' Equity Attributable to Parent [Abstract]
Retained earnings		2,119	2,275
Accumulated other comprehensive loss, net		(40)	(54)
Member’s equity
Members' Capital		9,308	9,261
Total member's equity		11,387	11,482
Noncontrolling interests		1,743	1,774
Total equity		13,130	13,256
Total liabilities and shareholders’ equity		48,130	46,974
Exelon Generation Co L L C [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Assets, Current [Abstract]
Cash and cash equivalents		68	150
Restricted cash and cash equivalents		48	27
Accounts receivable, net
Customer		106	371
Other		24	48
Mark-to-market derivative assets		0	31
Inventories, net
Materials and supplies		193	199
Other		34	44
Total current assets		473	870
Property, plant and equipment, net		5,293	5,415
Deferred debits and other assets
Nuclear decommissioning trust funds		2,341	2,185
Goodwill		0	47
Mark-to-market derivative assets		0	23
Other		235	277
Total assets		8,342	8,817
Liabilities, Current [Abstract]
Long-term debt due within one year		154	99
Accounts payable		80	269
Accrued expenses		47	116
Unamortized energy contract liabilities		16	15
Mark-to-market derivative liabilities (current liabilities)		0	60
Other		5	30
Total current liabilities		302	589
Long-term debt		533	540
Deferred credits and other liabilities
Asset Retirement Obligations, Noncurrent		1,954	1,904
Pension obligations	[5]	0	9
Unamortized energy contract liabilities		13	22
Other		98	106
Total liabilities		2,900	3,170
Exelon Generation Co L L C [Member] | Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Deferred debits and other assets
Total assets		8,342	8,817
Deferred credits and other liabilities
Total liabilities		2,900	3,170
Commonwealth Edison Co [Member]
Assets, Current [Abstract]
Cash and cash equivalents		39	56
Restricted cash and cash equivalents		12	2
Accounts receivable, net
Customer		529	528
Other		211	218
Receivables from affiliates		386	356
Inventories, net
Inventories, net		160	159
Regulatory assets		182	190
Other		57	45
Total current assets		1,576	1,554
Property, plant and equipment, net		20,019	19,335
Deferred debits and other assets
Regulatory assets		1,050	977
Investments		6	6
Goodwill		2,625	2,625
Receivable from affiliate		2,364	2,170
Prepaid pension asset		1,283	1,343
Other		237	325
Total deferred debits and other assets		7,565	7,446
Total assets		29,160	28,335
Liabilities, Current [Abstract]
Short-term borrowings		389	0
Long-term debt due within one year		1,125	425
Accounts payable		547	645
Accrued expenses		1,107	1,250
Payables to affiliates		67	65
Customer deposits		115	121
Regulatory liabilities		269	329
Mark-to-market derivative liabilities (current liabilities)		19	19
Other		112	84
Total current liabilities		3,750	2,938
Long-term debt		5,911	6,608
Long-term debt to financing trusts		205	205
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		5,600	5,364
Asset Retirement Obligations, Noncurrent		122	119
Non-pension postretirement benefit obligations		229	239
Regulatory liabilities		3,585	3,369
Mark-to-market derivative liabilities (noncurrent liabilities)		237	239
Other		541	529
Total deferred credits and other liabilities		10,314	9,859
Total liabilities		20,180	19,610
Commitments and contingencies
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		1,588	1,588
Retained earnings		(1,639)	(1,639)
Other paid-in capital		6,357	6,150
Retained Earnings, Appropriated		2,674	2,626
Total shareholders’ equity		8,980	8,725
Member’s equity
Total liabilities and shareholders’ equity		29,160	28,335
PECO Energy Co [Member]
Assets, Current [Abstract]
Cash and cash equivalents		45	63
Restricted cash and cash equivalents		4	4
Accounts receivable, net
Customer		258	306
Other		135	131
Receivables from affiliates		1	4
Receivable from Exelon intercompany pool		10	131
Inventories, net
Fossil fuel and emission allowances		25	35
Materials and supplies		30	27
Prepaid Taxes		77	9
Regulatory assets		46	29
Other		25	18
Total current assets		656	757
Property, plant and equipment, net		7,758	7,565
Deferred debits and other assets
Regulatory assets		1,732	1,681
Investments		24	25
Receivable from affiliate		506	438
Prepaid pension asset		354	345
Other		11	20
Total deferred debits and other assets		2,627	2,509
Total assets		11,041	10,831
Liabilities, Current [Abstract]
Long-term debt due within one year		500	0
Accounts payable		278	342
Accrued expenses		136	104
Payables to affiliates		50	63
Customer deposits		63	61
Regulatory liabilities		155	127
Other		31	30
Total current liabilities		1,213	727
Long-term debt		2,080	2,580
Long-term debt to financing trusts		184	184
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		3,128	3,006
Asset Retirement Obligations, Noncurrent		28	28
Non-pension postretirement benefit obligations		289	289
Regulatory liabilities		544	517
Other		89	85
Total deferred credits and other liabilities		4,078	3,925
Total liabilities		7,555	7,416
Commitments and contingencies
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		2,473	2,473
Retained earnings		1,012	941
Accumulated other comprehensive loss, net		1	1
Total shareholders’ equity		3,486	3,415
Member’s equity
Total liabilities and shareholders’ equity		11,041	10,831
Baltimore Gas and Electric Company [Member]
Assets, Current [Abstract]
Cash and cash equivalents		12	23
Restricted cash and cash equivalents		6	24
Accounts receivable, net
Customer		312	395
Other		75	102
Receivables from affiliates		1	0
Inventories, net
Fossil fuel and emission allowances		31	30
Materials and supplies		42	38
Prepaid Taxes		0	15
Regulatory assets		197	208
Other		4	7
Total current assets		680	842
Property, plant and equipment, net		7,283	7,040
Deferred debits and other assets
Regulatory assets		495	504
Investments		13	12
Prepaid pension asset		310	297
Other		5	9
Total deferred debits and other assets		823	822
Total assets	[7]	8,786	8,704
Liabilities, Current [Abstract]
Short-term borrowings		85	45
Long-term debt due within one year		0	41
Accounts payable		205	205
Accrued expenses		100	175
Payables to affiliates		49	55
Customer deposits		113	110
Regulatory liabilities		67	50
Other		21	26
Total current liabilities		640	707
Long-term debt		2,282	2,281
Long-term debt to financing trusts		252	252
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		2,322	2,219
Asset Retirement Obligations, Noncurrent		22	21
Non-pension postretirement benefit obligations		201	205
Regulatory liabilities		90	110
Other		59	61
Total deferred credits and other liabilities		2,694	2,616
Total liabilities	[7]	5,868	5,856
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		1,421	1,421
Retained earnings		1,497	1,427
Total shareholders’ equity		2,918	2,848
Member’s equity
Total liabilities and shareholders’ equity		8,786	8,704
Baltimore Gas and Electric Company [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Assets, Current [Abstract]
Cash and cash equivalents			0
Restricted cash and cash equivalents			23
Accounts receivable, net
Customer			0
Other			0
Mark-to-market derivative assets			0
Inventories, net
Materials and supplies			0
Other			0
Total current assets			23
Property, plant and equipment, net			0
Deferred debits and other assets
Nuclear decommissioning trust funds			0
Goodwill			0
Mark-to-market derivative assets			0
Other			3
Total assets			26
Liabilities, Current [Abstract]
Long-term debt due within one year			41
Accounts payable			0
Accrued expenses			1
Unamortized energy contract liabilities			0
Mark-to-market derivative liabilities (current liabilities)			0
Other			0
Total current liabilities			42
Long-term debt			0
Deferred credits and other liabilities
Asset Retirement Obligations, Noncurrent			0
Pension obligations	[5]		0
Unamortized energy contract liabilities			0
Other			0
Total liabilities			42
Baltimore Gas and Electric Company [Member] | Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Deferred debits and other assets
Total assets			26
Deferred credits and other liabilities
Total liabilities			42
Pepco Holdings LLC [Member] | Successor [Member]
Assets, Current [Abstract]
Cash and cash equivalents		151	170
Restricted cash and cash equivalents		40	43
Accounts receivable, net
Customer		484	496
Other		199	283
Mark-to-market derivative assets		0	0
Receivables from affiliates		1	0
Inventories, net
Fossil fuel and emission allowances		6	6
Materials and supplies		134	116
Regulatory assets		605	653
Other		86	71
Total current assets		1,706	1,838
Property, plant and equipment, net		12,014	11,598
Deferred debits and other assets
Regulatory assets		2,715	2,851
Investments		132	133
Goodwill		4,005	4,005
Notes, Loans and Financing Receivable, Gross, Noncurrent		4	4
Mark-to-market derivative assets		0	0
Prepaid pension asset		529	509
Deferred Tax Assets, Net, Noncurrent		6	6
Other		79	81
Total deferred debits and other assets		7,470	7,589
Total assets	[8]	21,190	21,025
Liabilities, Current [Abstract]
Short-term borrowings		67	522
Long-term debt due within one year		160	253
Accounts payable		415	458
Accrued expenses		259	272
Payables to affiliates		86	94
Unamortized energy contract liabilities		279	335
Customer deposits		119	123
Regulatory liabilities		68	79
Mark-to-market derivative liabilities (current liabilities)		0	0
Payables to Customers		73	101
Other		36	47
Total current liabilities		1,562	2,284
Long-term debt		5,792	5,645
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		3,844	3,775
Asset Retirement Obligations, Noncurrent		14	14
Non-pension postretirement benefit obligations		135	134
Regulatory liabilities		151	158
Mark-to-market derivative liabilities (noncurrent liabilities)		0	0
Unamortized energy contract liabilities		638	750
Other		213	249
Total deferred credits and other liabilities		4,995	5,080
Total liabilities		12,349	13,009
Stockholders' Equity Attributable to Parent [Abstract]
Retained earnings		13	(61)
Member’s equity
Members' Capital		8,828	8,077
Total member's equity		8,841	8,016
Total equity		8,841	8,016
Total liabilities and shareholders’ equity	[8]	21,190	21,025
Pepco Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary [Member] | Successor [Member]
Assets, Current [Abstract]
Cash and cash equivalents	[3]	0	0
Restricted cash and cash equivalents	[3]	7	9
Accounts receivable, net
Customer	[3]	0	0
Other	[3]	0	0
Mark-to-market derivative assets	[3]	0	0
Inventories, net
Materials and supplies	[3]	0	0
Other	[3]	4	5
Total current assets	[3]	11	14
Property, plant and equipment, net	[3]	0	0
Deferred debits and other assets
Nuclear decommissioning trust funds	[3]	0	0
Goodwill	[3]	0	0
Mark-to-market derivative assets	[3]	0	0
Other	[3]	32	35
Total assets	[3]	43	49
Liabilities, Current [Abstract]
Long-term debt due within one year	[3]	37	40
Accounts payable	[3]	0	0
Accrued expenses	[3]	1	2
Unamortized energy contract liabilities	[3]	0	0
Mark-to-market derivative liabilities (current liabilities)	[3]	0	0
Other	[3]	0	0
Total current liabilities	[3]	38	42
Long-term debt	[3]	83	101
Deferred credits and other liabilities
Asset Retirement Obligations, Noncurrent	[3]	0	0
Pension obligations	[3],[5]	0	0
Unamortized energy contract liabilities	[3]	0	0
Other	[3]	0	0
Total liabilities	[3]	121	143
Pepco Holdings LLC [Member] | Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member] | Successor [Member]
Deferred debits and other assets
Total assets		43	49
Deferred credits and other liabilities
Total liabilities		121	143
Potomac Electric Power Company [Member]
Assets, Current [Abstract]
Cash and cash equivalents		119	9
Restricted cash and cash equivalents		34	33
Accounts receivable, net
Customer		256	235
Other		114	150
Inventories, net
Materials and supplies		73	63
Regulatory assets		165	162
Other		7	32
Total current assets		768	684
Property, plant and equipment, net		5,759	5,571
Deferred debits and other assets
Regulatory assets		682	690
Investments		102	102
Prepaid pension asset		332	282
Other		5	6
Total deferred debits and other assets		1,121	1,080
Total assets		7,648	7,335
Liabilities, Current [Abstract]
Short-term borrowings		0	23
Long-term debt due within one year		18	16
Accounts payable		157	209
Accrued expenses		117	113
Payables to affiliates		70	74
Customer deposits		53	53
Regulatory liabilities		5	11
Payables to Customers		49	68
Other		16	29
Total current liabilities		485	596
Long-term debt		2,527	2,333
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		1,950	1,910
Non-pension postretirement benefit obligations		40	43
Regulatory liabilities		17	20
Other		125	133
Total deferred credits and other liabilities		2,132	2,106
Total liabilities		5,144	5,035
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		1,470	1,309
Other paid-in capital		1,034	991
Total shareholders’ equity		2,504	2,300
Member’s equity
Total liabilities and shareholders’ equity		7,648	7,335
Delmarva Power and Light Company [Member]
Assets, Current [Abstract]
Cash and cash equivalents		6	46
Accounts receivable, net
Customer		124	136
Other		49	63
Receivables from affiliates		0	3
Inventories, net
Fossil fuel and emission allowances		6	7
Materials and supplies		36	32
Regulatory assets		71	59
Other		19	24
Total current assets		311	370
Property, plant and equipment, net		3,412	3,273
Deferred debits and other assets
Regulatory assets		299	289
Goodwill		8	8
Prepaid pension asset		200	206
Other		5	7
Total deferred debits and other assets		512	510
Total assets		4,235	4,153
Liabilities, Current [Abstract]
Short-term borrowings		25	0
Long-term debt due within one year		109	119
Accounts payable		125	88
Accrued expenses		35	36
Payables to affiliates		33	38
Customer deposits		35	36
Regulatory liabilities		43	43
Payables to Customers		3	13
Other		9	8
Total current liabilities		417	381
Long-term debt		1,217	1,221
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		1,092	1,056
Non-pension postretirement benefit obligations		20	19
Regulatory liabilities		95	97
Other		46	53
Total deferred credits and other liabilities		1,253	1,225
Total liabilities		2,887	2,827
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		764	764
Retained earnings		584	562
Total shareholders’ equity		1,348	1,326
Member’s equity
Total liabilities and shareholders’ equity		4,235	4,153
Atlantic City Electric Company [Member]
Assets, Current [Abstract]
Cash and cash equivalents		7	101
Restricted cash and cash equivalents		7	9
Accounts receivable, net
Customer		103	125
Other		46	44
Inventories, net
Materials and supplies		25	22
Prepaid Taxes		37	0
Regulatory assets		89	96
Other		4	2
Total current assets		318	399
Property, plant and equipment, net		2,628	2,521
Deferred debits and other assets
Regulatory assets		406	405
Notes, Loans and Financing Receivable, Gross, Noncurrent		4	4
Prepaid pension asset		79	84
Other		43	44
Total deferred debits and other assets		532	537
Total assets	[9]	3,478	3,457
Liabilities, Current [Abstract]
Short-term borrowings		42	0
Long-term debt due within one year		33	35
Accounts payable		122	132
Accrued expenses		56	38
Payables to affiliates		23	29
Customer deposits		31	33
Regulatory liabilities		20	25
Payables to Customers		21	20
Other		8	8
Total current liabilities		356	320
Long-term debt		1,105	1,120
Deferred credits and other liabilities
Deferred Income Taxes and Other Tax Liabilities, Noncurrent		911	917
Non-pension postretirement benefit obligations		35	34
Regulatory liabilities		0	0
Other		23	32
Total deferred credits and other liabilities		969	983
Total liabilities		2,430	2,423
Stockholders' Equity Attributable to Parent [Abstract]
Common stock		912	912
Retained earnings		136	122
Total shareholders’ equity		1,048	1,034
Member’s equity
Total liabilities and shareholders’ equity	[9]	3,478	3,457
Atlantic City Electric Company [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Assets, Current [Abstract]
Cash and cash equivalents		0	0
Restricted cash and cash equivalents		7	9
Accounts receivable, net
Customer		0	0
Other		0	0
Mark-to-market derivative assets		0	0
Inventories, net
Materials and supplies		0	0
Other		0	0
Total current assets		7	9
Property, plant and equipment, net		0	0
Deferred debits and other assets
Nuclear decommissioning trust funds		0	0
Goodwill		0	0
Mark-to-market derivative assets		0	0
Other		23	23
Total assets		30	32
Liabilities, Current [Abstract]
Long-term debt due within one year		33	35
Accounts payable		0	0
Accrued expenses		1	2
Unamortized energy contract liabilities		0	0
Mark-to-market derivative liabilities (current liabilities)		0	0
Other		0	0
Total current liabilities		34	37
Long-term debt		74	89
Deferred credits and other liabilities
Asset Retirement Obligations, Noncurrent		0	0
Pension obligations	[5]	0	0
Unamortized energy contract liabilities		0	0
Other		0	0
Total liabilities		108	126
Atlantic City Electric Company [Member] | Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member]
Member’s equity
Noncontrolling Interest in Variable Interest Entity		30	32
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities		$ 108	$ 126

[1] Exelon’s consolidated assets include $8,385 million and $8,893 million at June 30, 2017 and December 31, 2016, respectively, of certain VIEs that can only be used to settle the liabilities of the VIE. Exelon’s consolidated liabilities include $3,021 million and $3,356 million at June 30, 2017 and December 31, 2016, respectively, of certain VIEs for which the VIE creditors do not have recourse to Exelon. See Note 3 - Variable Interest Entities.

[2] These items represent amounts on the unconsolidated VIE balance sheets, not on Exelon’s or Generation’s Consolidated Balance Sheets. These items are included to provide information regarding the relative size of the unconsolidated VIEs.

[3] Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.

[4] Includes certain purchase accounting adjustments not pushed down to the BGE standalone entity.

[5] Includes the CNEG retail gas pension obligation, which is presented as a net asset balance within the Prepaid pension asset line item on Generation’s Consolidated Balance Sheets. See Note 13 - Retirement Benefits for additional details.

[6] Generation’s consolidated assets include $8,342 million and $8,817 million at June 30, 2017 and December 31, 2016, respectively, of certain VIEs that can only be used to settle the liabilities of the VIE. Generation’s consolidated liabilities include $2,900 million and $3,170 million at June 30, 2017 and December 31, 2016, respectively, of certain VIEs for which the VIE creditors do not have recourse to Generation. See Note 3 - Variable Interest Entities.

[7] BGE’s consolidated assets include $26 million at December 31, 2016 of BGE’s consolidated VIE that can only be used to settle the liabilities of the VIE. BGE’s consolidated liabilities include $42 million at December 31, 2016 of BGE’s consolidated VIE for which the VIE creditors do not have recourse to BGE. BGE has no interests in any VIEs as of June 30, 2017. See Note 3 - Variable Interest Entities.

[8] PHI’s consolidated total assets include $43 million and $49 million at June 30, 2017 and December 31, 2016, respectively, of PHI's consolidated VIE that can only be used to settle the liabilities of the VIE. PHI’s consolidated total liabilities include $121 million and $143 million at June 30, 2017 and December 31, 2016, respectively, of PHI's consolidated VIE for which the VIE creditors do not have recourse to PHI. See Note 3 - Variable Interest Entities.

[9] ACE’s consolidated total assets include $30 million and $32 million at June 30, 2017 and December 31, 2016, respectively, of ACE's consolidated VIE that can only be used to settle the liabilities of the VIE. ACE’s consolidated total liabilities include $108 million and $126 million at June 30, 2017 and December 31, 2016, respectively, of ACE's consolidated VIE for which the VIE creditors do not have recourse to ACE. See Note 3 - Variable Interest Entities.