Pensions and Postretirement Benefits (Assets by fair value hierarchy) (Details) (USD $) | 12 Months Ended |
In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | $125.40 | $109.40 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 125.4 | 109.4 |
Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 115.6 | 100.5 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 115.6 | 100.5 |
Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2.5 | 2.5 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2.5 | 2.5 |
Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 7.3 | 6.4 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 7.3 | 6.4 |
Common Stock [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 50.8 | 42.6 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 50.8 | 42.6 |
Common Stock [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 48.3 | 40.1 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 48.3 | 40.1 |
Common Stock [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2.5 | 2.5 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2.5 | 2.5 |
Common Stock [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Equity Funds [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 26.9 | 23.9 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 26.9 | 23.9 |
Equity Funds [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 26.9 | 23.9 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 26.9 | 23.9 |
Equity Funds [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Equity Funds [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Foreign Stock [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 5.6 | 4.1 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 5.6 | 4.1 |
Foreign Stock [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 5.6 | 4.1 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 5.6 | 4.1 |
Foreign Stock [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Foreign Stock [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
U.S. Government obligations [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 5.1 | 6.5 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 5.1 | 6.5 |
U.S. Government obligations [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 5.1 | 6.5 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 5.1 | 6.5 |
U.S. Government obligations [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
U.S. Government obligations [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Fixed Income Funds [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 18.8 | 17.1 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 18.8 | 17.1 |
Fixed Income Funds [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 18.8 | 17.1 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 18.8 | 17.1 |
Fixed Income Funds [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Fixed Income Funds [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Balanced Funds [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2.1 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2.1 | 0 |
Balanced Funds [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2.1 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2.1 | 0 |
Balanced Funds [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Balanced Funds [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Corporate Bonds [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 6.8 | 6.8 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 6.8 | 6.8 |
Corporate Bonds [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 6.8 | 6.8 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 6.8 | 6.8 |
Corporate Bonds [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Corporate Bonds [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Cash and Cash Equivalents [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2 | 2 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2 | 2 |
Cash and Cash Equivalents [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 2 | 2 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 2 | 2 |
Cash and Cash Equivalents [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Cash and Cash Equivalents [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Hedge Funds [Member] | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 7.3 | 6.4 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at beginning of year | 6.4 | 5.9 |
Net Unrealized Gain | 0.9 | 0.5 |
Purchases | 0 | 0 |
Fair value of plan assets at end of year | 7.3 | 6.4 |
Hedge Funds [Member] | Level 1 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Hedge Funds [Member] | Level 2 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 0 | 0 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | 0 | 0 |
Hedge Funds [Member] | Level 3 | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' |
Fair value of plan assets | 7.3 | 6.4 |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ' | ' |
Fair value of plan assets at end of year | $7.30 | $6.40 |