Note 4 - Discontinued Operations Income Statement of Discontinued Ops(Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue		$ 1,217.5	$ 1,433.5
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		50.9	35.0
Discontinued Operation, Tax Effect of Discontinued Operation		18.7	15.0
Disposal Group, Including Discontinued Operation, Operating Income (Loss)		32.2	20.0
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		(53.8)	0
Income (loss) from discontinued operations, net of tax	0	(21.6)	20.0
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax	(210.5)
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation	156.7
Deferred Tax Liabilities, Parent's Basis in Discontinued Operation	78.0
Disposal Group, Including Discontinued Operation, Other Expense	7.1
maximum indemnity obligation under stock purchase agreement	25.0
Amount billed under TSA	$ 2.8