Employee Benefit Plans (Fair Values Of Pension Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	$ 484.0	$ 472.2
Cash
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	6.7	6.6
Large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		28.4
Small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	19.2	22.0
International equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		14.4
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		107.7
Non-U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	44.3	45.2
Floating rate income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	35.7	35.3
Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	18.8	14.8
United States equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	62.6	30.0
Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	77.0
US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	74.6	42.8
Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	129.9	125.0
Other
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	15.2
Quoted Prices in Active Markets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	305.2	427.4
Quoted Prices in Active Markets (Level 1) | Cash
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	6.7	6.6
Quoted Prices in Active Markets (Level 1) | Large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		28.4
Quoted Prices in Active Markets (Level 1) | Small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	19.2	22.0
Quoted Prices in Active Markets (Level 1) | International equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		14.4
Quoted Prices in Active Markets (Level 1) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		107.7
Quoted Prices in Active Markets (Level 1) | Non-U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	44.3	45.2
Quoted Prices in Active Markets (Level 1) | Floating rate income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	35.7	35.3
Quoted Prices in Active Markets (Level 1) | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Quoted Prices in Active Markets (Level 1) | United States equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Quoted Prices in Active Markets (Level 1) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0
Quoted Prices in Active Markets (Level 1) | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	74.6	42.8
Quoted Prices in Active Markets (Level 1) | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	124.7	125.0
Quoted Prices in Active Markets (Level 1) | Other
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	163.6	44.8
Significant Other Observable Inputs (Level 2) | Cash
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Other Observable Inputs (Level 2) | Small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | International equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Other Observable Inputs (Level 2) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Other Observable Inputs (Level 2) | Non-U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Floating rate income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	18.8	14.8
Significant Other Observable Inputs (Level 2) | United States equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	62.6	30.0
Significant Other Observable Inputs (Level 2) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	77.0
Significant Other Observable Inputs (Level 2) | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Other Observable Inputs (Level 2) | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	5.2	0
Significant Other Observable Inputs (Level 2) | Other
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	15.2	0
Significant Unobservable Inputs (Level 3) | Cash
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Large-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Unobservable Inputs (Level 3) | Small-cap equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | International equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Unobservable Inputs (Level 3) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets		0
Significant Unobservable Inputs (Level 3) | Non-U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Floating rate income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Short-term investments
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | United States equity
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0
Significant Unobservable Inputs (Level 3) | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Fixed Income Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	0	0
Significant Unobservable Inputs (Level 3) | Other
Defined Benefit Plan Disclosure [Line Items]
Total plan assets	$ 15.2