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Debt (Tables) | 9 Months Ended
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Sep. 30, 2013
Debt Disclosure (Tables) [Abstract] |
Schedule of Debt Instruments | Debt at September 30, 2013 and December 31, 2012 was as follows (in millions):
| September 30, 2013 |  | December 31, 2012
Allegheny Technologies 5.875% Notes due 2023 | $ | 500.0 |  |  | $ | — |
Allegheny Technologies 5.95% Notes due 2021 | 500.0 |  |  | 500.0 |
Allegheny Technologies 4.25% Convertible Notes due 2014 | 402.5 |  |  | 402.5 |
Allegheny Technologies 9.375% Notes due 2019 | 350.0 |  |  | 350.0 |
Allegheny Ludlum 6.95% debentures due 2025 | 150.0 |  |  | 150.0 |
ATI Ladish Series B 6.14% Notes due 2016 (a) | 18.4 |  |  | 24.8 |
ATI Ladish Series C 6.41% Notes due 2015 (b) | 21.4 |  |  | 32.5 |
Domestic Bank Group $400 million unsecured credit facility | — |  |  | — |
Foreign credit facilities | 14.3 |  |  | 14.2 |
Industrial revenue bonds, due through 2020, and other | 5.5 |  |  | 6.1 |
Total short-term and long-term debt | 1,962.1 |  |  | 1,480.1 |
Short-term debt and current portion of long-term debt | 419.9 |  |  | 17.1 |
Total long-term debt | $ | 1,542.2 |  |  | $ | 1,463.0 |
(a) | Includes fair value adjustments of $1.2 million at September 30, 2013 and $1.9 million at December 31, 2012.
(b) | Includes fair value adjustments of $1.4 million at September 30, 2013 and $2.5 million at December 31, 2012.

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- Definition The entire disclosure for long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 + Details
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