Income Taxes - Deferred Taxes (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Deferred income tax assets
Employee pensions and other benefits	$ 658,000,000	$ 540,000,000
Other balance sheet reserves and allowances	148,000,000	170,000,000
Tax loss and credit carryforwards	376,000,000	341,000,000
Capitalized research and development	67,000,000	57,000,000
Property, plant and equipment	49,000,000	18,000,000
Intangible Assets	0	5,000,000
Other	56,000,000	47,000,000
Total deferred income tax assets	1,354,000,000	1,178,000,000
Valuation allowance	(412,000,000)	(410,000,000)
Net deferred income tax assets	942,000,000	768,000,000
Deferred income tax liabilities
Intangible Assets	81,000,000	0
Capitalized software	10,000,000	11,000,000
Other	9,000,000	7,000,000
Total deferred income tax liabilities	100,000,000	18,000,000
Total net deferred income tax assets	842,000,000	750,000,000
Operating Loss Carryforwards	848,000,000,000
United States [Member]
Deferred income tax assets
Net deferred income tax assets	704,000,000
Deferred income tax liabilities
Tax credit carryforward, amount	68,000,000
Tax credit carryforward, amount that is not subject to expiration	22,000,000
Tax credit carryforward, amount that is subject to expiration	$ 46,000,000