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Fair Value Disclosures (Non-Pension Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | $ 33.3 | $ 9.5 |  |
Total Assets, Fair Value Disclosure, Recurring |  | 48.0 | 16.4 |  |
Derivative Liability, Fair Value, Gross Liability |  | 36.8 | 13.5 |  |
Total Liabilities, Fair Value Disclosure, Recurring |  | 36.8 | 13.5 |  |
Cash and cash equivalents |  | 587.5 | 274.8 | $ 199.4 | $ 226.3
Other assets |  | 383.6 | 273.4 |  |
Investment Securities, Including Mutual Funds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure |  | 14.7 | 6.9 |  |
Cash and Cash Equivalents [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Cash and cash equivalents |  | 7.9 | 2.0 |  |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0.0 | 0.0 |  |
Total Assets, Fair Value Disclosure, Recurring |  | 4.8 | 4.5 |  |
Derivative Liability, Fair Value, Gross Liability |  | 0.0 | 0.0 |  |
Total Liabilities, Fair Value Disclosure, Recurring |  | 0.0 | 0.0 |  |
Fair Value, Inputs, Level 1 [Member] | Investment Securities, Including Mutual Funds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure | [1] | 4.8 | 4.5 |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 33.3 | 9.5 |  |
Total Assets, Fair Value Disclosure, Recurring |  | 43.2 | 11.9 |  |
Derivative Liability, Fair Value, Gross Liability |  | 36.8 | 13.5 |  |
Total Liabilities, Fair Value Disclosure, Recurring |  | 36.8 | 13.5 |  |
Fair Value, Inputs, Level 2 [Member] | Investment Securities, Including Mutual Funds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure | [1] | 9.9 | 2.4 |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  | 0.0 | 0.0 |  |
Total Assets, Fair Value Disclosure, Recurring |  | 0.0 | 0.0 |  |
Derivative Liability, Fair Value, Gross Liability |  | 0.0 | 0.0 |  |
Total Liabilities, Fair Value Disclosure, Recurring |  | 0.0 | 0.0 |  |
Fair Value, Inputs, Level 3 [Member] | Investment Securities, Including Mutual Funds [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure |  | 0.0 | 0.0 |  |
Supplemental Executive Retirement Plan [Member] | Other Assets [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Other assets |  | $ 6.8 | $ 4.9 |  |
[1] | The values of investment securities, including mutual funds, are classified as cash and cash equivalents ($7.9 million and $2.0 million as of December 31, 2016 and 2015, respectively) and other assets ($6.8 million and $4.9 million as of December 31, 2016 and 2015, respectively). For mutual funds that are publicly traded, fair value is determined on the basis of quoted market prices and, accordingly, these investments have been classified as Level 1. Other investment securities are valued at the net asset value per share or unit multiplied by the number of shares or units held as of the measurement date and have been classified as Level 2.

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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