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Organization and Basis of Presentation Organization and Basis of Presentation (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Cash and Cash Equivalents |  | $ 118 | $ 313 |  |
Cash, Cash Equivalents and Restricted Cash |  | 134 | 315 | $ 197 | $ 426
PSE And G [Member] |  |  |  |  |
Cash and Cash Equivalents |  | 48 | 242 |  |
Cash, Cash Equivalents and Restricted Cash |  | 64 | 244 | 157 | 393
Power [Member] |  |  |  |  |
Cash and Cash Equivalents |  | 11 | 32 |  |
Cash, Cash Equivalents and Restricted Cash |  | 11 | 32 | $ 18 | $ 11
Other Entities [Member] |  |  |  |  |
Cash and Cash Equivalents | [1] | 59 | 39 |  |
Cash, Cash Equivalents and Restricted Cash | [1] | 59 | 39 |  |
Other Current Assets [Member] |  |  |  |  |
Restricted Cash in Other Current Assets |  | 14 | 0 |  |
Other Current Assets [Member] | PSE And G [Member] |  |  |  |  |
Restricted Cash in Other Current Assets |  | 14 | 0 |  |
Other Current Assets [Member] | Power [Member] |  |  |  |  |
Restricted Cash in Other Current Assets |  | 0 | 0 |  |
Other Current Assets [Member] | Other Entities [Member] |  |  |  |  |
Restricted Cash in Other Current Assets | [1] | 0 | 0 |  |
Other Noncurrent Assets [Member] |  |  |  |  |
Restricted Cash in Other Noncurrent Assets |  | 2 | 2 |  |
Other Noncurrent Assets [Member] | PSE And G [Member] |  |  |  |  |
Restricted Cash in Other Noncurrent Assets |  | 2 | 2 |  |
Other Noncurrent Assets [Member] | Power [Member] |  |  |  |  |
Restricted Cash in Other Noncurrent Assets |  | 0 | 0 |  |
Other Noncurrent Assets [Member] | Other Entities [Member] |  |  |  |  |
Restricted Cash in Other Noncurrent Assets | [1] | $ 0 | $ 0 |  |
[1] | Includes amounts applicable to PSEG (parent corporation), Energy Holdings and Services.

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3044-108585 + Details
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