|
Contracts in Process, Net (Contracts in Process) (Details) (USD $)
In Millions, unless otherwise specified
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Allowance for doubtful accounts |
$ (4) |
$ (7) |
| Contracts in process, net |
4,543 |
4,526 |
|
US Government [Member]
|
|
|
| Billed Contracts Receivable |
575 |
615 |
| Unbilled Contracts Receivable |
9,846 |
11,050 |
| Progress payments from the U.S. Government |
(6,870) |
(8,392) |
| Contracts in process, Gross, Current |
3,551 |
3,273 |
|
Cost-Type [Member]
|
|
|
| Allowance for doubtful accounts |
0 |
0 |
| Contracts in process, net |
1,357 |
1,310 |
|
Fixed-Price [Member]
|
|
|
| Allowance for doubtful accounts |
(4) |
(7) |
| Contracts in process, net |
3,186 |
3,216 |
|
Other Customers [Member]
|
|
|
| Billed Contracts Receivable |
556 |
568 |
| Unbilled Contracts Receivable |
1,099 |
1,358 |
| Progress payments from the U.S. Government |
(659) |
(666) |
| Contracts in process, Gross, Current |
996 |
1,260 |
|
Other Customers Cost-Type [Member]
|
|
|
| Billed Contracts Receivable |
11 |
17 |
| Unbilled Contracts Receivable |
27 |
31 |
| Progress payments from the U.S. Government |
0 |
0 |
| Contracts in process, Gross, Current |
38 |
48 |
|
Other Customers Fixed-Price [Member]
|
|
|
| Billed Contracts Receivable |
545 |
551 |
| Unbilled Contracts Receivable |
1,072 |
1,327 |
| Progress payments from the U.S. Government |
(659) |
(666) |
| Contracts in process, Gross, Current |
958 |
1,212 |
|
US Government Cost-Type [Member]
|
|
|
| Billed Contracts Receivable |
363 |
397 |
| Unbilled Contracts Receivable |
956 |
865 |
| Progress payments from the U.S. Government |
0 |
0 |
| Contracts in process, Gross, Current |
1,319 |
1,262 |
|
US Government Fixed-Price [Member]
|
|
|
| Billed Contracts Receivable |
212 |
218 |
| Unbilled Contracts Receivable |
8,890 |
10,185 |
| Progress payments from the U.S. Government |
(6,870) |
(8,392) |
| Contracts in process, Gross, Current |
$ 2,232 |
$ 2,011 |