Fair Value Measurements (Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Document Period End Date		Sep. 30, 2020
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets		$ 149.2	$ 28.9
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities		131.5	81.5
Liabilities held for sale		0.0	9.3
Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Equity securities	[1]	33.2	54.8
Held-to-maturity debt securities		71.9	71.9
Assets held for sale		56.8	25.8
Total assets		497.9	297.5
Liabilities, Fair Value Disclosure [Abstract]
Liabilities held for sale			9.3
Total liabilities		597.6	472.1
Fair Value, Measurements, Recurring | Long-term - Derivative financial instruments - Synthetic Bonds - Call Option Premium
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets			4.3
Fair Value, Measurements, Recurring | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets		333.6	137.1
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities		315.9	189.7
Fair Value, Measurements, Recurring | Long-term - Derivative financial instruments - Synthetic Bonds - Embedded Derivatives
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities			4.3
Fair Value, Measurements, Recurring | Level 1
Assets, Fair Value Disclosure [Abstract]
Equity securities	[1]	33.2	54.8
Total assets		33.2	54.8
Fair Value, Measurements, Recurring | Level 1 | Long-term - Derivative financial instruments - Synthetic Bonds - Embedded Derivatives
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities		0.0
Fair Value, Measurements, Recurring | Level 2
Assets, Fair Value Disclosure [Abstract]
Equity securities	[1]		0.0
Held-to-maturity debt securities		71.9	71.9
Total assets		407.1	214.8
Liabilities, Fair Value Disclosure [Abstract]
Total liabilities		315.9	194.0
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			4.3
Fair Value, Measurements, Recurring | Level 2 | Foreign exchange contracts
Assets, Fair Value Disclosure [Abstract]
Derivative financial instrument assets		333.6	137.1
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities		315.9	189.7
Fair Value, Measurements, Recurring | Level 2 | Long-term - Derivative financial instruments - Synthetic Bonds - Embedded Derivatives
Liabilities, Fair Value Disclosure [Abstract]
Derivative financial instrument liabilities			4.3
Fair Value, Measurements, Recurring | Level 3
Assets, Fair Value Disclosure [Abstract]
Assets held for sale		56.8	25.8
Total assets		56.8	25.8
Liabilities, Fair Value Disclosure [Abstract]
Liabilities held for sale			9.3
Total liabilities		281.7	278.1
Redeemable financial liability | Fair Value, Measurements, Recurring
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability		281.7	268.8
Redeemable financial liability | Fair Value, Measurements, Recurring | Level 3
Liabilities, Fair Value Disclosure [Abstract]
Redeemable financial liability		281.7	268.8
Nonqualified Plan | Fair Value, Measurements, Recurring
Assets, Fair Value Disclosure [Abstract]
Money market fund		1.6	1.5
Stable Value Fund	[2]	0.8	2.1
Nonqualified Plan | Fair Value, Measurements, Recurring | Level 2
Assets, Fair Value Disclosure [Abstract]
Money market fund		$ 1.6	$ 1.5

[1] Includes fixed income and other investments measured at fair value.

[2] Certain investments that are measured at fair value using net asset value per share (or its equivalent) have not been classified in the fair value hierarchy.