Pension, Profit Sharing & Other Post-Retirement Benefits - Plan Assets by Asset Category (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	100.00%	100.00%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	3.50%	1.40%
Equity Based [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	60.10%	58.90%
Fixed Income Based [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan asset allocations	36.40%	39.70%
Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 131.7	$ 119.1	$ 124.1
Target plan asset allocations	100.00%	100.00%
Defined Benefit [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	117.3	114.0
Defined Benefit [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Defined Benefit [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	14.4	5.1
United States Pension Plans of US Entity, Defined Benefit [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4.5	1.7
Target plan asset allocations	3.50%	1.40%
United States Pension Plans of US Entity, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4.5	1.7
United States Pension Plans of US Entity, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | US Treasury and Government [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.2	4.8
Target plan asset allocations	0.90%	4.00%
United States Pension Plans of US Entity, Defined Benefit [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.2	4.8
United States Pension Plans of US Entity, Defined Benefit [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.2	9.6
Target plan asset allocations	4.70%	8.10%
United States Pension Plans of US Entity, Defined Benefit [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.2	9.6
United States Pension Plans of US Entity, Defined Benefit [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	20.2	18.0
Target plan asset allocations	15.30%	15.10%
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	20.2	18.0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	54.4	51.9
Target plan asset allocations	41.30%	43.60%
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	54.4	51.9
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	14.4	5.1
Target plan asset allocations	10.90%	4.30%
United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	14.4	5.1
United States Pension Plans of US Entity, Defined Benefit [Member] | Other Investment [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.9	1.6
Target plan asset allocations	0.70%	1.30%
United States Pension Plans of US Entity, Defined Benefit [Member] | Other Investment [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.9	1.6
United States Pension Plans of US Entity, Defined Benefit [Member] | Other Investment [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
United States Pension Plans of US Entity, Defined Benefit [Member] | Other Investment [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	29.9	26.4
Target plan asset allocations	22.70%	22.20%
Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	29.9	26.4
Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0	0
Domestic Large Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4.0	3.6
Target plan asset allocations	3.00%	3.00%
Domestic Mid Cap Growth [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.0	5.3
Target plan asset allocations	4.60%	4.40%
Domestic Mid Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	8.3	7.6
Target plan asset allocations	6.20%	6.40%
Domestic Mid Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.8	5.7
Target plan asset allocations	5.20%	4.80%
Domestic Mid Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	0.1	0
Target plan asset allocations	0.10%	0.00%
Domestic Small Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	5.9	5.1
Target plan asset allocations	4.50%	4.30%
Domestic Small Cap Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.0	5.4
Target plan asset allocations	4.60%	4.50%
International Value [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	7.8	6.4
Target plan asset allocations	5.90%	5.50%
International Core [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6.1	5.4
Target plan asset allocations	4.60%	4.50%
International Core [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2.8	2.5
Target plan asset allocations	2.10%	2.10%
Domestic Small Cap Core [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3.4	3.0
Target plan asset allocations	2.60%	2.50%
International Macro Hedge [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1.6	1.6
Target plan asset allocations	1.20%	1.30%
Fixed Income [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Equity Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	18.7	20.8
Target plan asset allocations	14.20%	17.50%
Fixed Income [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	8.8	0
Target plan asset allocations	6.70%	0.00%
Fixed Income [Member] | Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	12.2	10.5
Target plan asset allocations	9.30%	8.80%
Domestic Large Cap Core [Member] | United States Pension Plans of US Entity, Defined Benefit [Member] | Investment in Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	2.7	2.6
Target plan asset allocations	2.00%	2.20%
International Hedge [Member] | Foreign Pension Plans, Defined Benefit [Member] | Investment in Pension Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 17.7	$ 15.9
Target plan asset allocations	13.40%	13.40%