Employee Retirement Plans and Postretirement Benefits Pension Fair Value Hierarchy (Details) (USD $) | Dec. 31, 2013 | Dec. 29, 2012 | Dec. 31, 2011 |
In Millions, unless otherwise specified |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | $3,596.20 | $3,353.80 | ' |
Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | -45.5 | 606.7 | ' |
Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 3,156.20 | 2,353.70 | ' |
Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 485.5 | 393.4 | 334.9 |
Cash | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 127.5 | 108.2 | ' |
Cash | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 127.5 | 108.2 | ' |
Cash | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Cash | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Trades awaiting settlement | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 25.9 | 5.4 | ' |
Trades awaiting settlement | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 25.9 | 5.4 | ' |
Trades awaiting settlement | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Trades awaiting settlement | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Bank deposits, short-term bills and notes | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 33.8 | 36.4 | ' |
Bank deposits, short-term bills and notes | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Bank deposits, short-term bills and notes | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 33.8 | 36.4 | ' |
Bank deposits, short-term bills and notes | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Government securities | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 790.4 | 837.2 | ' |
Government securities | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Government securities | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 790.4 | 837.2 | ' |
Government securities | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Corporate debt securities | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 438.7 | 536.8 | ' |
Corporate debt securities | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Corporate debt securities | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 438.1 | 536.8 | ' |
Corporate debt securities | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0.6 | 0 | ' |
Interest and inflation linked assets | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 1,100.60 | 171.6 | ' |
Interest and inflation linked assets | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Interest and inflation linked assets | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 1,073.40 | 205.7 | ' |
Interest and inflation linked assets | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 27.2 | -34.1 | ' |
Collateralized debt securities | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 5 | 4.3 | ' |
Collateralized debt securities | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Collateralized debt securities | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Collateralized debt securities | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 5 | 4.3 | ' |
Other debt securities | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Other debt securities | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Other debt securities | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Other debt securities | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Equities | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 6.4 | 1.2 | ' |
Equities | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 6.4 | 1.2 | ' |
Equities | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Equities | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Common stock | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 712.3 | 583.7 | ' |
Common stock | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 711.4 | 581.7 | ' |
Common stock | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0.9 | 0 | ' |
Common stock | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 2 | ' |
Debt funds | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 325 | 273.7 | ' |
Debt funds | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Debt funds | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 196.2 | 157.5 | ' |
Debt funds | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 128.8 | 116.2 | ' |
Equity funds | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 515.6 | 499.7 | ' |
Equity funds | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 7.8 | ' |
Equity funds | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 515.6 | 491.9 | ' |
Equity funds | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Real estate funds | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 43.6 | 55.9 | ' |
Real estate funds | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Real estate funds | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Real estate funds | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 43.6 | 55.9 | ' |
Hedge funds of funds | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 339.5 | 321.9 | ' |
Hedge funds of funds | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Hedge funds of funds | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 112.8 | 101.7 | ' |
Hedge funds of funds | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 226.7 | 220.2 | ' |
Repurchase agreements | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | -917.5 | -98.1 | ' |
Repurchase agreements | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | -917.5 | -98.1 | ' |
Repurchase agreements | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Repurchase agreements | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Credit default swaps | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | -5 | -13.5 | ' |
Credit default swaps | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Credit default swaps | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | -5 | -13.5 | ' |
Credit default swaps | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Private equity | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 53.3 | 28.4 | ' |
Private equity | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Private equity | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Private equity | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 53.3 | 28.4 | ' |
Recoverable taxes | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0.8 | 0.5 | ' |
Recoverable taxes | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0.8 | 0.5 | ' |
Recoverable taxes | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Recoverable taxes | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Venture capital | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0.3 | 0.5 | ' |
Venture capital | Quoted prices in active markets (Level 1) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Venture capital | Significant observable inputs (Level 2) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | ' |
Venture capital | Significant unobservable inputs (Level 3) | ' | ' | ' |
Defined Benefit Plan Disclosure [Line Items] | ' | ' | ' |
Defined Benefit Plan, Fair Value of Plan Assets | $0.30 | $0.50 | ' |