Pension and Other Postretirement Benefit Plans (Details 6) (USD $) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 |
In Millions, unless otherwise specified |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | $144 | $148.50 | ' |
Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 60.8 | 61.8 | ' |
Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 83.2 | 86.7 | ' |
Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Cash and Cash Equivalents [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 3.1 | 2.4 | ' |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 3.1 | 2.4 | ' |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, U.S. large cap [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 18.2 | 17.3 | ' |
Mutual Funds, U.S. large cap [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 18.2 | 17.3 | ' |
Mutual Funds, U.S. large cap [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, U.S. large cap [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, U.S. Small Cap [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 12.3 | 11.8 | ' |
Mutual Funds, U.S. Small Cap [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 12.3 | 11.8 | ' |
Mutual Funds, U.S. Small Cap [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, U.S. Small Cap [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, International Growth [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 14.8 | ' |
Mutual Funds, International Growth [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 14.8 | ' |
Mutual Funds, International Growth [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Mutual Funds, International Growth [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Corporate Debt Securities [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 73.9 | 78.5 | ' |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 73.9 | 78.5 | ' |
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
US Treasury and Government [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 13.1 | ' |
US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 10 | 13.1 | ' |
US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
US States and Political Subdivisions Debt Securities [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 3.6 | 3.8 | ' |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 3.6 | 3.8 | ' |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Fixed Income Securities [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 5.7 | 4.4 | ' |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 5.7 | 4.4 | ' |
Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
India Government Backed Funds [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 2.2 | 2.4 | ' |
India Government Backed Funds [Member] | Fair Value, Inputs, Level 1 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 2.2 | 2.4 | ' |
India Government Backed Funds [Member] | Fair Value, Inputs, Level 2 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
India Government Backed Funds [Member] | Fair Value, Inputs, Level 3 [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Pension Plans, Defined Benefit [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 144 | 148.5 | 144.2 |
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] | ' | ' | ' |
Expected Future Benefit Payments, Next Twelve Months | 10.5 | ' | ' |
Expected Future Benefit Payments, Year Two | 11.2 | ' | ' |
Expected Future Benefit Payments, Year Three | 11 | ' | ' |
Expected Future Benefit Payments, Year Four | 11.2 | ' | ' |
Expected Future Benefit Payments, Year Five | 12.4 | ' | ' |
Expected Future Benefit Payments, Five Fiscal Years Thereafter | 60.1 | ' | ' |
Other Postretirement Benefit Plans, Defined Benefit [Member] | ' | ' | ' |
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | 0 |
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract] | ' | ' | ' |
Expected Future Benefit Payments, Next Twelve Months | 0 | ' | ' |
Expected Future Benefit Payments, Year Two | 0 | ' | ' |
Expected Future Benefit Payments, Year Three | 0 | ' | ' |
Expected Future Benefit Payments, Year Four | 0 | ' | ' |
Expected Future Benefit Payments, Year Five | 0 | ' | ' |
Expected Future Benefit Payments, Five Fiscal Years Thereafter | $0.10 | ' | ' |