Fair Value Measurements (Assets And Liabilities Measured On A Recurring Basis) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	$ 28.9	$ 8.1
Derivative liability	81.5	77.4
Liabilities Held For Sale, Current	9.3	16.2
Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	54.8	40.4
Debt Securities, Held-to-maturity, Fair Value	71.9	20.0
Liabilities	25.8	9.6
Investments, Fair Value Disclosure	297.5	186.1
Liabilities Held For Sale, Current	9.3	16.2
Financial Liabilities Fair Value Disclosure	472.1	608.0
Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	54.8	40.4
Debt Securities, Held-to-maturity, Fair Value	0.0	0.0
Liabilities	0.0	0.0
Investments, Fair Value Disclosure	54.8	40.4
Liabilities Held For Sale, Current	0.0	0.0
Financial Liabilities Fair Value Disclosure	0.0	0.0
Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	0.0	0.0
Debt Securities, Held-to-maturity, Fair Value	71.9	20.0
Liabilities	0.0	0.0
Investments, Fair Value Disclosure	214.8	135.6
Liabilities Held For Sale, Current	0.0	0.0
Financial Liabilities Fair Value Disclosure	194.0	183.3
Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	0.0	0.0
Debt Securities, Held-to-maturity, Fair Value	0.0	0.0
Liabilities	25.8	9.6
Investments, Fair Value Disclosure	25.8	9.6
Liabilities Held For Sale, Current	9.3	16.2
Financial Liabilities Fair Value Disclosure	278.1	424.7
Synthetic bonds - embedded derivatives | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Synthetic bonds - embedded derivatives	268.8	408.5
Synthetic bonds - embedded derivatives | Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Synthetic bonds - embedded derivatives	0.0	0.0
Synthetic bonds - embedded derivatives | Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Synthetic bonds - embedded derivatives	0.0	0.0
Synthetic bonds - embedded derivatives | Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Synthetic bonds - embedded derivatives	268.8	408.5
Call option | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	4.3	9.2
Call option | Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0.0	0.0
Call option | Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	4.3	9.2
Call option | Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0.0	0.0
Foreign exchange contract | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	137.1	104.8
Derivative liability	189.7	174.1
Foreign exchange contract | Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0.0	0.0
Derivative liability	0.0	0.0
Foreign exchange contract | Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	137.1	104.8
Derivative liability	189.7	174.1
Foreign exchange contract | Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0.0	0.0
Derivative liability	0.0	0.0
Embedded derivative financial instruments | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	4.3	9.2
Embedded derivative financial instruments | Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0.0	0.0
Embedded derivative financial instruments | Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	4.3	9.2
Embedded derivative financial instruments | Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0.0	0.0
Nonqualified Plan | Fair value, measurements, recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market fund	1.5	1.6
Stable value fund	2.1	0.5
Nonqualified Plan | Fair value, measurements, recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market fund	0.0	0.0
Stable value fund	0.0	0.0
Nonqualified Plan | Fair value, measurements, recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market fund	1.5	1.6
Stable value fund	0.0	0.0
Nonqualified Plan | Fair value, measurements, recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market fund	0.0	0.0
Stable value fund	$ 0.0	$ 0.0