Financing Arrangements (Components Of Long-Term Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term debt, Principal Amount	$ 1,209.4	$ 1,163.5
Long-term debt, Unamortized discount and debt issuance cost	16.5	16.9
Total long-term debt	1,192.9	1,146.6
Less current portion, Principal Amount	18.6	18.6
Less current portion, Unamortized discount and debt issuance cost	0.0	0.0
Less current portion	18.6	18.6
Total long-term debt, net of current portion, Principal Amount	1,190.8	1,144.9
Total long-term debt, net of current portion, Unamortized discount and debt issuance cost	16.5	16.9
Total long-term debt, net of current portion	1,174.3	1,128.0
Senior term loan due 2022 | Loans Payable
Debt Instrument [Line Items]
Long-term debt, Principal Amount	548.6	550.0
Long-term debt, Unamortized discount and debt issuance cost	8.5	8.6
Total long-term debt	540.1	541.4
Revolving credit facility due 2018
Debt Instrument [Line Items]
Long-term debt, Principal Amount	47.3
Long-term debt, Unamortized discount and debt issuance cost	0.0
Total long-term debt	47.3
5.25% senior notes due 2023 | Senior Notes
Debt Instrument [Line Items]
Long-term debt, Principal Amount	600.0	600.0
Long-term debt, Unamortized discount and debt issuance cost	8.0	8.3
Total long-term debt	$ 592.0	$ 591.7
Interest rate of senior notes due 2023	5.25%	5.25%
Other debt
Debt Instrument [Line Items]
Long-term debt, Principal Amount	$ 13.5	$ 13.5
Long-term debt, Unamortized discount and debt issuance cost	0.0	0.0
Total long-term debt	$ 13.5	$ 13.5