Inventories (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Airplane Program 787 [Member]
Inventories [Line Items]
Inventory, work in process	$ 25,697	$ 21,289
Deferred production costs	18,733	15,929
Supplier advances	1,977	1,908
Unamortized tooling and other non-recurring costs	2,620	2,339
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	15,674
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	5,679
Airplane Program 747 [Member]
Inventories [Line Items]
Deferred production costs	1,374	1,292
Unamortized tooling and other non-recurring costs	627	683
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	971
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	1,030
Capitalized Precontract Costs [Member]
Inventories [Line Items]
Inventory subject to uncertainty	358	238
Early Issue Sales Consideration [Member]
Inventories [Line Items]
Inventory subject to uncertainty	3,426	2,989
ULA [Member]
Inventories [Line Items]
Inventory subject to uncertainty	665	725
ULA [Member] | Unsold Launches [Member]
Inventories [Line Items]
Inventory subject to uncertainty	390
A12 Program [Member]
Inventories [Line Items]
Inventory subject to uncertainty	$ 237	$ 237