Schedule Of Fair Values Of Pension Plan Assets By Asset Category (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 101.8		$ 100.2
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.9		9.0
Equity Securities - Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	35.0	[1]	16.1	[1]
Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.8		6.6
Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.5	[2]	9.3	[2]
Global Multi-Strategy Fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.5	[3]	37.8	[4]
Insurance Investment Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[5]	5.9	[5]
Government Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.4	[6]	15.3	[6]
Pension Plan Investments, Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.7	[7]	0.2	[7]
Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.2		10.2
Fair Value, Inputs, Level 1 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.9		9.0
Fair Value, Inputs, Level 1 | Equity Securities - Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.1	[1]	1.0	[1]
Fair Value, Inputs, Level 1 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fair Value, Inputs, Level 1 | Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[2]	0	[2]
Fair Value, Inputs, Level 1 | Global Multi-Strategy Fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[3]	0	[4]
Fair Value, Inputs, Level 1 | Insurance Investment Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[5]	0	[5]
Fair Value, Inputs, Level 1 | Government Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[6]	0	[6]
Fair Value, Inputs, Level 1 | Pension Plan Investments, Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.2	[7]	0.2	[7]
Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	98.6		46.3
Fair Value, Inputs, Level 2 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fair Value, Inputs, Level 2 | Equity Securities - Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	33.9	[1]	15.1	[1]
Fair Value, Inputs, Level 2 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1.8		6.6
Fair Value, Inputs, Level 2 | Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.5	[2]	9.3	[2]
Fair Value, Inputs, Level 2 | Global Multi-Strategy Fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19.5	[3]	0	[4]
Fair Value, Inputs, Level 2 | Insurance Investment Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[5]	0	[5]
Fair Value, Inputs, Level 2 | Government Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	22.4	[6]	15.3	[6]
Fair Value, Inputs, Level 2 | Pension Plan Investments, Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.5	[7]	0	[7]
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		43.7
Fair Value, Inputs, Level 3 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fair Value, Inputs, Level 3 | Equity Securities - Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[1]	0	[1]
Fair Value, Inputs, Level 3 | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0		0
Fair Value, Inputs, Level 3 | Bond Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[2]	0	[2]
Fair Value, Inputs, Level 3 | Global Multi-Strategy Fund
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[3]	37.8	[4]
Fair Value, Inputs, Level 3 | Insurance Investment Contract
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[5]	5.9	[5]
Fair Value, Inputs, Level 3 | Government Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	[6]	0	[6]
Fair Value, Inputs, Level 3 | Pension Plan Investments, Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	[7]	$ 0	[7]

[1] The equity securities represent mutual funds held primarily by the pension plans in Canada and the United Kingdom, which include both domestic and international equity securities. Mutual funds are valued at quoted market prices, which represent the net asset values of shares held by the plans as of December 31, 2013 and December 31, 2014.

[2] The bond funds constitutes investments primarily for the pension plans in Canada and the fund consists of investments in Canadian government, corporate and municipal or local governments bonds.

[3] The global multi-strategy fund, which was purchased during 2014 for the pension plans in the United Kingdom, represents a series of multiple asset diversified funds invested in equities, bonds and other investments. The global multi-strategy fund is valued at the net asset value per unit multiplied by the number of units held as of the measurement date.

[4] The global multi-strategy fund constitutes an indexed fund for the pension plans in the United Kingdom as of December 31, 2013. The fund, which was sold during 2014, was a fund of funds invested in a series of diverse international equity funds and fixed income funds

[5] The insurance investment contract is in the form of an insurance policy that was held by the pension plans in the United Kingdom. The investment of the underlying assets was in various managed funds. Insurance contracts are valued at book value, which approximates fair value, and are calculated using the prior year balance adjusted for investment returns and changes in cash flows.

[6] Government fixed income securities held by pension plans in the United Kingdom are valued at the net asset value per share multiplied by the number of shares held as of the measurement date.

[7] Other category includes other investments for pension plans in the international subsidiaries.