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Contingencies And Commitments (Guarantees) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2019 USD ($)
Guarantees |
Guarantees And Other Contingencies [Line Items] |
Guarantee Description | Guarantees
Expiration Date | indefinite
Maximum Obligation | $ 36
Carrying Amount | $ 0
Guarantees | Consumers Energy Company |
Guarantees And Other Contingencies [Line Items] |
Guarantee Description | Guarantee
Expiration Date | indefinite
Maximum Obligation | $ 30
Carrying Amount | $ 0
Indemnity Obligations From Stock And Asset Sales Agreements |
Guarantees And Other Contingencies [Line Items] |
Guarantee Description | Indemnity obligations from stock and asset sales agreements
Expiration Date | indefinite
Maximum Obligation | $ 153
Carrying Amount | 2
Tax And Other Indemnity Obligations | Consumers Energy Company |
Guarantees And Other Contingencies [Line Items] |
Carrying Amount | $ 1

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 + Details
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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 + Details
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- Definition Describes how and under what circumstances or in connection with which transaction the guarantee or each group of similar guarantees was given and the objective of the guarantee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 + Details
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- Definition Describe the approximate term of the guarantee or each group of similar guarantees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 + Details
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