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Discontinued Operations (Details) - Dec. 17, 2013 - Aftermarket services (AMS) - USD ($)
$ in Millions
Total
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Consideration for the sale of a business $ 725.0
Cash consideration for the sale of a business 675.0
Consideration for the sale of a business preferred stock $ 50.0
Accretes dividends at an annual rate 8.00%
Redeemable period 9 years
Reduction in final purchase price $ 100.2