Pension and Other Post-Retirement Benefit Plans (Pension Plan Assets Measured At Fair Value) (Details) - USD ($) $ in Millions		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S.
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		$ 463.4	$ 504.8	$ 576.8
International
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		355.9	386.7	$ 400.8
Fair Value, Measurements, Recurring | U.S.
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		463.1	505.6
Fair Value, Measurements, Recurring | U.S. | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		29.7	103.6
Fair Value, Measurements, Recurring | U.S. | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		150.0	162.3
Fair Value, Measurements, Recurring | U.S. | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		30.8	53.5
Fair Value, Measurements, Recurring | U.S. | Registered investment companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	[1]	14.8	4.8
Fair Value, Measurements, Recurring | U.S. | Common/collective trusts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	[1]	23.1	49.3
Fair Value, Measurements, Recurring | U.S. | Hedge funds
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	[1]	140.3	65.3
Fair Value, Measurements, Recurring | U.S. | Limited partnerships
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets	[1]	68.3	60.3
Fair Value, Measurements, Recurring | U.S. | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		6.1	6.5
Fair Value, Measurements, Recurring | U.S. | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		216.6	325.9
Fair Value, Measurements, Recurring | U.S. | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		29.7	103.6
Fair Value, Measurements, Recurring | U.S. | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		150.0	162.3
Fair Value, Measurements, Recurring | U.S. | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		30.8	53.5
Fair Value, Measurements, Recurring | U.S. | Level 1 | Real estate and other investments
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		6.1	6.5
Fair Value, Measurements, Recurring | International
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		355.9	386.7
Fair Value, Measurements, Recurring | International | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		1.2	0.3
Fair Value, Measurements, Recurring | International | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		44.5	44.1
Fair Value, Measurements, Recurring | International | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		221.8	241.9
Fair Value, Measurements, Recurring | International | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		88.4	100.4
Fair Value, Measurements, Recurring | International | Level 1
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		267.5	286.3
Fair Value, Measurements, Recurring | International | Level 1 | Cash and cash equivalents
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		1.2	0.3
Fair Value, Measurements, Recurring | International | Level 1 | U.S. companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		44.5	44.1
Fair Value, Measurements, Recurring | International | Level 1 | International companies
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		221.8	241.9
Fair Value, Measurements, Recurring | International | Level 2
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		88.4	100.4
Fair Value, Measurements, Recurring | International | Level 2 | Insurance contracts
Pension and Other Postretirement Benefit Plans Disclosure [Line Items]
Total plan assets		$ 88.4	$ 100.4

[1] 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.