Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details)

v3.8.0.1
Fair Value Measurements (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Assets:    
Cash Equivalents $ 34.4 $ 18.9
Short-Term Investments in Marketable Securities 0.8 35.8
Restricted Cash 9.4 11.2
Derivatives 6.0 11.2
Total Assets 50.6 77.1
Liabilities:    
Derivatives 7.7 4.7
Deferred Compensation 32.6 29.7
Total Liabilities 40.3 34.4
Liabilities Measured at Net Asset Value 10.5 10.3
Financial and Nonfinancial Liabilities, Fair Value Disclosure 50.8 44.7
Fair Value, Inputs, Level 1 [Member]    
Assets:    
Cash Equivalents 34.4 4.6
Short-Term Investments in Marketable Securities 0.8 0.8
Restricted Cash 9.4 11.2
Derivatives 0.0 0.0
Total Assets 44.6 16.6
Liabilities:    
Derivatives 0.0 0.0
Deferred Compensation 4.0 4.1
Total Liabilities 4.0 4.1
Fair Value, Inputs, Level 2 [Member]    
Assets:    
Cash Equivalents 0.0 14.3
Short-Term Investments in Marketable Securities 0.0 35.0
Restricted Cash 0.0 0.0
Derivatives 6.0 11.2
Total Assets 6.0 60.5
Liabilities:    
Derivatives 7.7 4.7
Deferred Compensation 28.6 25.6
Total Liabilities $ 36.3 $ 30.3