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Variable Interest Entities (Tables)
6 Months Ended
Jun. 30, 2018
Variable Interest Entity [Abstract]  
Schedule of Variable Interest Entities
As of June 30, 2018 and December 31, 2017, these assets and liabilities primarily consisted of the following:
 
June 30, 2018
 
December 31, 2017
 
Exelon (a)

Generation
 
PHI (a)
 
ACE
 
Exelon(a)
 
Generation
 
PHI (a)
 
ACE
Cash and cash equivalents
$
205

 
$
205

 
$

 
$

 
$
126

 
$
126

 
$

 
$

Restricted cash
77

 
72

 
5

 
5

 
64

 
58

 
6

 
6

Accounts receivable, net
 
 
 
 

 
 
 
 
 
 
 

 
 
Customer
149

 
149

 

 

 
170

 
170

 

 

Other
32

 
32

 

 

 
25

 
25

 

 

Inventory, net
 
 
 
 

 
 
 
 
 
 
 

 
 
Materials and supplies
208

 
208

 

 

 
205

 
205

 

 

Other current assets
47

 
43

 
4

 

 
45

 
41

 
4

 

Total current assets
718


709


9

 
5

 
635


625


10

 
6

Property, plant and equipment, net
6,157

 
6,157

 

 

 
6,186

 
6,186

 

 

Nuclear decommissioning trust funds
2,483

 
2,483

 

 

 
2,502

 
2,502

 

 

Other noncurrent assets
254

 
226

 
28

 
20

 
274

 
243

 
31

 
23

Total noncurrent assets
8,894


8,866


28

 
20

 
8,962


8,931


31

 
23

Total assets
$
9,612


$
9,575


$
37

 
$
25

 
$
9,597


$
9,556


$
41

 
$
29

Long-term debt due within one year
$
95

 
$
66

 
$
29

 
$
25

 
$
102

 
$
67

 
$
35

 
$
31

Accounts payable
74

 
74

 

 

 
114

 
114

 

 

Accrued expenses
81

 
80

 
1

 
1

 
67

 
66

 
1

 
1

Unamortized energy contract liabilities
16

 
16

 

 

 
18

 
18

 

 

Other current liabilities
2

 
2

 

 

 
7

 
7

 

 

Total current liabilities
268

 
238

 
30

 
26

 
308

 
272

 
36

 
32

Long-term debt
1,119

 
1,061

 
58

 
50

 
1,154

 
1,088

 
66

 
58

Asset retirement obligations
2,088

 
2,088

 

 

 
2,035

 
2,035

 

 

Other noncurrent liabilities
69

 
69

 

 

 
121

 
121

 

 

Total noncurrent liabilities
3,276

 
3,218

 
58

 
50

 
3,310

 
3,244

 
66

 
58

Total liabilities
$
3,544

 
$
3,456

 
$
88

 
$
76

 
$
3,618

 
$
3,516

 
$
102

 
$
90

_________
(a)
Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.
The following tables present summary information about Exelon's and Generation’s significant unconsolidated VIE entities:  
June 30, 2018
Commercial
Agreement
VIEs
 
Equity
Investment
VIEs
 
Total
Total assets(a)
$
620

 
$
491

 
$
1,111

Total liabilities(a)
37

 
224

 
261

Exelon's ownership interest in VIE(a)

 
238

 
238

Other ownership interests in VIE(a)
583

 
29

 
612

Registrants’ maximum exposure to loss:
 
 
 
 

Carrying amount of equity method investments

 
238

 
238

Contract intangible asset
8

 

 
8

Net assets pledged for Zion Station decommissioning(b)
1

 

 
1

December 31, 2017
Commercial
Agreement
VIEs
 
Equity
Investment
VIEs
 
Total
Total assets(a)
$
625

 
$
509

 
$
1,134

Total liabilities(a)
37

 
228

 
265

Exelon's ownership interest in VIE(a)

 
251

 
251

Other ownership interests in VIE(a)
588

 
30

 
618

Registrants’ maximum exposure to loss:
 
 
 
 

Carrying amount of equity method investments

 
251

 
251

Contract intangible asset
8

 

 
8

Net assets pledged for Zion Station decommissioning(b)
2

 

 
2

_________
(a)
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.
(b)
These items represent amounts on Exelon’s and Generation’s Consolidated Balance Sheets related to the asset sale agreement with ZionSolutions, LLC. The net assets pledged for Zion Station decommissioning includes gross pledged assets of $21 million and $39 million as of June 30, 2018 and December 31, 2017, respectively; offset by payables to ZionSolutions, LLC of $20 million and $37 million as of June 30, 2018 and December 31, 2017, respectively. These items are included to provide information regarding the relative size of the ZionSolutions, LLC unconsolidated VIE. See Note 13Nuclear Decommissioning for additional information.
The carrying amounts and classification of the consolidated VIEs’ assets and liabilities included in the Registrants' consolidated financial statements at June 30, 2018 and December 31, 2017 are as follows:
 
June 30, 2018
 
December 31, 2017
 
Exelon(a)
 
Generation
 
PHI(a)
 
ACE
 
Exelon(a)
 
Generation
 
PHI(a)
 
ACE
Current assets
$
744

 
$
735

 
$
9

 
$
5

 
$
662

 
$
652

 
$
10

 
$
6

Noncurrent assets
9,234

 
9,206

 
28

 
20

 
9,317

 
9,286

 
31

 
23

Total assets
$
9,978


$
9,941


$
37

 
$
25


$
9,979


$
9,938


$
41

 
$
29

Current liabilities
$
268

 
$
238

 
$
30

 
$
26

 
$
308

 
$
272

 
$
36

 
$
32

Noncurrent liabilities
3,284

 
3,226

 
58

 
50

 
3,316

 
3,250

 
66

 
58

Total liabilities
$
3,552


$
3,464


$
88

 
$
76


$
3,624


$
3,522


$
102

 
$
90

_________
(a)
Includes certain purchase accounting adjustments not pushed down to the ACE standalone entity.