|
Other Assets, Net (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
| Computer software amortization expenses |
$ 88 |
$ 87 |
$ 88 |
| Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets |
80 |
115 |
28 |
| Intangible assets amortization expense |
49 |
46 |
28 |
| Equity method investments - TRS undistributed earnings |
65 |
|
|
| Receivables due to TRS LLC from Air Command Systems International (ACSI) |
58 |
|
|
| Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |
143 |
|
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Two |
143 |
|
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Three |
143 |
|
|
| Finite-Lived Intangible Assets, Amortization Expense, Year Four |
143 |
|
|
| Finite-Lived Intangible Assets, Amortization Expense, after Year Five |
143 |
|
|
|
TRS [Member]
|
|
|
|
| Equity Method Investments |
$ 69 |
$ 80 |
|
|
Maximum [Member]
|
|
|
|
| Finite-Lived Intangible Asset, Useful Life |
15 years |
|
|
|
Minimum [Member]
|
|
|
|
| Finite-Lived Intangible Asset, Useful Life |
2 years |
|
|