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Financings And Capitalization (Tables) | 6 Months Ended
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Jun. 30, 2014
Summary Of Major Long-Term Debt Transactions |
| Principal |  | Issue/Retirement |  |
| (In Millions) | Interest Rate |  | Date | Maturity Date |
Debt issuances |  |  |  |  |  |  |  |
CMS Energy |  |  |  |  |  |  |  |
Senior notes 1 |  | $ | 250 | 3.875 | % | February 2014 | March 2024 |
Senior notes 1 |  |  | 300 | 4.875 |  | February 2014 | March 2044 |
Total debt issuances |  | $ | 550 |  |  |  |  |
Debt retirements |  |  |  |  |  |  |  |
CMS Energy |  |  |  |  |  |  |  |
Senior notes 2 |  | $ | 125 | 6.875 | % | April 2014 | December 2015 |
Senior notes |  |  | 155 | 5.500 |  | June 2014 | June 2029 |
Total debt retirements |  | $ | 280 |  |  |  |  |
| 1 |  | CMS Energy used a portion of these proceeds to retire its $125 million 6.875 percent senior notes due December 2015 and its $155 million 5.5 percent convertible senior notes due June 2029. CMS Energy intends to use the remaining proceeds for general corporate purposes.
| 2 |  | CMS Energy retired this debt at a premium and recorded a loss on extinguishment of $13 million in other expense on its consolidated statements of income.
Revolving Credit Facilities |
In Millions
|  |  | Letters of Credit |
Expiration Date | Amount of Facility | Amount Borrowed | Outstanding | Amount Available |
CMS Energy |  |  |  |  |  |  |  |  |  |  |  |  |
December 20, 2018 1 |  | $ | 550 |  | $ | - |  | $ | 2 |  | $ | 548 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
December 20, 2018 2 |  | $ | 650 |  | $ | - |  | $ | - |  | $ | 650 |
May 9, 2018 2 |  |  | 30 |  |  | - |  |  | 30 |  |  | - |
| 1 |  | Obligations under this facility are secured by Consumers common stock.
| 2 |  | Obligations under this facility are secured by FMBs of Consumers.
Conversions Of Contingently Convertible Securities |
|  |  | Weighted-Average | Shares |
|  | Principal | Conversion | of Common | Cash Paid on |
| Conversion | Converted | Value per $1,000 | Stock Issued | Settlement |
| Date | (In Millions) | of Principal | on Settlement | (In Millions) |
5.50% senior notes due 2029 | February 2014 |  | $ | 17 |  | $ | 1,968 | 605,531 |  | $ | 17 |
5.50% senior notes due 2029 | June 2014 |  |  | 155 |  |  | 2,215 | 6,372,578 |  |  | 155 |
Issuance Of Stock |
| Number of | Average | Proceeds |
| Shares Issued | Price per Share | (In Millions) |
March 2014 | 1,070,080 |  | $ | 28.04 |  | $ | 30 |
Consumers Energy Company [Member] |
Summary Of Major Long-Term Debt Transactions |
| Principal |  | Issue/Retirement |  |
| (In Millions) | Interest Rate |  | Date | Maturity Date |
Debt issuances |  |  |  |  |  |  |  |
CMS Energy |  |  |  |  |  |  |  |
Senior notes 1 |  | $ | 250 | 3.875 | % | February 2014 | March 2024 |
Senior notes 1 |  |  | 300 | 4.875 |  | February 2014 | March 2044 |
Total debt issuances |  | $ | 550 |  |  |  |  |
Debt retirements |  |  |  |  |  |  |  |
CMS Energy |  |  |  |  |  |  |  |
Senior notes 2 |  | $ | 125 | 6.875 | % | April 2014 | December 2015 |
Senior notes |  |  | 155 | 5.500 |  | June 2014 | June 2029 |
Total debt retirements |  | $ | 280 |  |  |  |  |
| 1 |  | CMS Energy used a portion of these proceeds to retire its $125 million 6.875 percent senior notes due December 2015 and its $155 million 5.5 percent convertible senior notes due June 2029. CMS Energy intends to use the remaining proceeds for general corporate purposes.
| 2 |  | CMS Energy retired this debt at a premium and recorded a loss on extinguishment of $13 million in other expense on its consolidated statements of income.
Revolving Credit Facilities |
In Millions
|  |  | Letters of Credit |
Expiration Date | Amount of Facility | Amount Borrowed | Outstanding | Amount Available |
CMS Energy |  |  |  |  |  |  |  |  |  |  |  |  |
December 20, 2018 1 |  | $ | 550 |  | $ | - |  | $ | 2 |  | $ | 548 |
Consumers |  |  |  |  |  |  |  |  |  |  |  |  |
December 20, 2018 2 |  | $ | 650 |  | $ | - |  | $ | - |  | $ | 650 |
May 9, 2018 2 |  |  | 30 |  |  | - |  |  | 30 |  |  | - |
| 1 |  | Obligations under this facility are secured by Consumers common stock.
| 2 |  | Obligations under this facility are secured by FMBs of Consumers.

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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