Fair Value Measurements (Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets	$ 25.1	$ 58.8
Asset held for sale	20.9	50.2
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities	21.4	22.7
Liabilities held for sale	14.9	13.7
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Equity securities	46.6	63.7
Money market fund	1.5	2.4
Stable Value Fund	0.5	0.6
Asset held for sale	20.9	50.2
Assets, Fair Value Disclosure	246.5	290.1
Liabilities, Fair Value Disclosure [Abstract]
Liabilities held for sale	14.9	13.7
Total liabilities	589.5	462.8
Fair Value, Measurements, Recurring \| Long-term - Derivative financial instruments - Synthetic Bonds - Call Option Premium
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets	66.4	62.2
Fair Value, Measurements, Recurring \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets	110.6	111.0
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities	106.9	74.9
Fair Value, Measurements, Recurring \| Long-term - Derivative financial instruments - Synthetic Bonds - Embedded Derivatives
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities	66.4	62.2
Fair Value, Measurements, Recurring \| Level 1
Assets, Fair Value Disclosure [Abstract]
Equity securities	46.6	63.7
Assets, Fair Value Disclosure	46.6	63.7
Fair Value, Measurements, Recurring \| Level 2
Assets, Fair Value Disclosure [Abstract]
Money market fund	1.5	2.4
Assets, Fair Value Disclosure	178.5	175.6
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities	173.3	137.1
Fair Value, Measurements, Recurring \| Level 2 \| Long-term - Derivative financial instruments - Synthetic Bonds - Call Option Premium
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets	66.4	62.2
Fair Value, Measurements, Recurring \| Level 2 \| Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets	110.6	111.0
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities	106.9	74.9
Fair Value, Measurements, Recurring \| Level 2 \| Long-term - Derivative financial instruments - Synthetic Bonds - Embedded Derivatives
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities	66.4	62.2
Fair Value, Measurements, Recurring \| Level 3
Assets, Fair Value Disclosure [Abstract]
Asset held for sale	20.9	50.2
Assets, Fair Value Disclosure	20.9	50.2
Liabilities, Fair Value Disclosure [Abstract]
Liabilities held for sale	14.9	13.7
Total liabilities	416.2	325.7
Redeemable financial liability \| Fair Value, Measurements, Recurring
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability	401.3	312.0
Redeemable financial liability \| Fair Value, Measurements, Recurring \| Level 1
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability	0.0	0.0
Redeemable financial liability \| Fair Value, Measurements, Recurring \| Level 2
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability	0.0	0.0
Redeemable financial liability \| Fair Value, Measurements, Recurring \| Level 3
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability	$ 401.3	$ 312.0

Financial Instruments Subject to Mandatory Redemption, Dividends Owed to Noncontrolling Interest

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Fair value portion of assets classified as held for sale.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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