Debt (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Millions		Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Revolving credit facility		$ 0.0	$ 0.0
Commercial paper	[1]	461.1	469.1
Term loan		14.8	22.9
Capital leases		6.3	9.7
Total long-term debt		1,278.6	1,297.5
Less: current portion		(17.4)	(3.8)
Long-term debt, less current portion		$ 1,261.2	1,293.7
Commercial Paper
Debt Instrument [Line Items]
Commercial paper borrowings weighted average interest rate, as a percent		0.55%
Senior Notes 2017
Debt Instrument [Line Items]
Senior notes, noncurrent		$ 299.0	$ 298.6
Senior notes, interest rate, as a percent		2.00%	2.00%
Senior Notes 2022
Debt Instrument [Line Items]
Senior notes, noncurrent		$ 497.4	$ 497.2
Senior notes, interest rate, as a percent		3.45%	3.45%

[1] Committed credit available under our revolving credit facility provided the ability to refinance our commercial paper obligations on a long-term basis. As we have both the ability and intent to refinance these obligations on a long-term basis, our commercial paper borrowings were classified as long-term in the condensed consolidated balance sheets at September 30, 2015 and December 31, 2014. As of September 30, 2015, our commercial paper borrowings had a weighted average interest rate of 0.55%.