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Indebtedness (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 0 Months Ended | 12 Months Ended |  |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Domestic revolving credit facility | Dec. 31, 2012 Foreign revolving loan facility | Dec. 03, 2012 Term loan | Dec. 31, 2012 Term loan 1 | Dec. 31, 2012 Term loan 2 | Dec. 31, 2012 6.875% senior notes | Dec. 31, 2011 6.875% senior notes | Dec. 31, 2012 7.625% senior notes | Dec. 31, 2011 7.625% senior notes | Dec. 31, 2007 7.625% senior notes | Dec. 31, 2012 Trade receivables financing arrangement | Dec. 31, 2012 Other indebtedness | Dec. 31, 2011 Other indebtedness | Dec. 31, 2012 Participation foreign credit instrument facility | Dec. 31, 2012 Bilateral foreign credit instrument facility | Dec. 31, 2012 Global revolving credit facility
Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | $ 2,001.1 |  |  |  | $ 30.9 |  | $ 300.0 | $ 500.0 | $ 600.0 | $ 600.0 | $ 500.0 | $ 500.0 |  |  | $ 70.2 |  |  |  |
Borrowings | 1,210.0 |  |  | 1,065.0 |  |  |  |  |  |  |  |  |  | 127.3 | 17.7 |  |  |  |
Repayments | (1,575.5) |  |  | (1,065.0) | (31.9) | (325.0) | (300.0) | (25.0) |  |  |  |  |  | (127.3) | (26.3) |  |  |  |
Other | 56.4 |  |  |  | 1.0 |  |  |  |  |  |  |  |  |  | 55.4 |  |  |  |
Balance at the end of the period | 1,692.0 | 2,001.1 |  |  |  |  |  | 475.0 | 600.0 | 600.0 | 500.0 | 500.0 |  |  | 117.0 |  |  |  |
Interest expense | (114.4) | (97.0) | (86.9) |  |  | (8.0) |  |  |  |  |  |  |  |  |  |  |  |  |
Short-term debt | 33.4 | 71.3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current maturities of long-term debt | 8.7 | 4.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total long-term debt | 1,649.9 | 1,925.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate percentage |  |  |  |  |  |  |  |  | 6.875% |  | 7.625% |  | 7.625% |  |  |  |  |  |
Purchase card program |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 27.9 | 40.4 |  |  |
Capital lease obligations | 82.3 |  |  |  |  |  |  |  |  |  |  |  |  |  | 82.3 | 26.0 |  |  |
Maximum borrowing capacity under financing arrangement |  |  |  | 300.0 |  |  |  |  |  |  |  |  |  | 130.0 |  |  | 1,000.0 | 200.0 | 300.0
Debt assumed in capital lease obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60.0 |  |  |  |
Debt repayable in quarterly installments |  |  |  |  |  |  |  | 475.0 |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt payable |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2013 | 8.7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 | 581.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 106.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2016 | 304.6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2017 | $ 604.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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