|
Retirement Benefits Plans - Fair Value of Pension Plan Assets (Details 11) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | $ 3,855 | $ 2,653 |
| United States pension plan percentage of worldwide pension assets | 68.00% | |
| United Kingdom pension plan percentage of worldwide pension assets | 26.00% | |
| United States pension plan target allocation of United States equities | 39.00% | |
| United States pension plan target allocation of non-United States equities | 30.00% | |
| United States pension plan target allocation of real estate | 4.00% | |
| United States target allocation of debt securities and other, including cash equivalents | 27.00% | |
| United Kingdom pension plan target allocation of equities | 62.00% | |
|
Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 416 | 327 |
|
Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 3,398 | 2,291 |
|
Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 41 | 35 |
|
Non-United States Equity and Global Equities [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 1,313 | 925 |
|
Non-United States Equity and Global Equities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Non-United States Equity and Global Equities [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 1,313 | 925 |
|
Non-United States Equity and Global Equities [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
United States Equity [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 978 | 642 |
|
United States Equity [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
United States Equity [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 978 | 642 |
|
United States Equity [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Fixed Income [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 538 | 263 |
|
Fixed Income [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Fixed Income [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 538 | 263 |
|
Fixed Income [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Long Duration Funds [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 61 | 107 |
|
Long Duration Funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Long Duration Funds [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 61 | 107 |
|
Long Duration Funds [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Exchange Traded Funds [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 43 | |
|
Exchange Traded Funds [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | |
|
Exchange Traded Funds [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 43 | |
|
Exchange Traded Funds [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | |
|
Fixed Income Securities [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 331 | 296 |
|
Fixed Income Securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Fixed Income Securities [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 331 | 296 |
|
Fixed Income Securities [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
United States treasuries [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 143 | 120 |
|
United States treasuries [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 143 | 120 |
|
United States treasuries [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
United States treasuries [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Real Estate [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 124 | 82 |
|
Real Estate [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 119 | 82 |
|
Real Estate [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Real Estate [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 5 | 0 |
|
Equity Securities [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 104 | 79 |
|
Equity Securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 104 | 79 |
|
Equity Securities [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Equity Securities [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Cash and Cash Equivalents [Member]
|
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| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 140 | 67 |
|
Cash and Cash Equivalents [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 7 | 9 |
|
Cash and Cash Equivalents [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 133 | 58 |
|
Cash and Cash Equivalents [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Investments [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 40 | 35 |
|
Investments [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 40 | 35 |
|
Investments [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Investments [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 0 | 0 |
|
Other Pension Plans, Defined Benefit [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 40 | 37 |
|
Other Pension Plans, Defined Benefit [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 3 | 2 |
|
Other Pension Plans, Defined Benefit [Member] | Other observable inputs (Level 2) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | 1 | 0 |
|
Other Pension Plans, Defined Benefit [Member] | Unobservable inputs (Level 3) [Member]
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Total pension plan assets | $ 36 | $ 35 |