Income Taxes (Deferred Income Tax Assets And Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011		Dec. 31, 2010
Accrued expenses not currently deductible	$ 559		$ 524
Differences related to non-U.S. operations	188	[1]	310	[1]
Accrued retirement & postretirement benefits—non-U.S. operations	164		45
Accrued retirement benefits U.S.	507		344
Net operating losses	129	[2]	190	[2]
Income currently recognized for tax	62		57
Foreign tax credit carryforwards	169		129
Other	114		181
Total, deferred tax assets	1,892		1,780
Unrealized investment holding gains	3		6
Differences related to non-U.S. operations	99		174
Depreciation and amortization	233		203
Other	9		15
Total, deferred tax liabilities	344		398
Current assets	376		177
Other assets	1,205		1,205
Current liabilities	(12)		0
Other liabilities	(21)		0
Deferred Tax Assets Related To Non U S Operations [Member]
Valuation Allowance, Amount	3
Deferred Tax Assets Related To Net Operating Loss [Member]
Valuation Allowance, Amount	$ 46		$ 47

[1] Net of valuation allowances of $3 million in 2011 and 2010.

[2] Net of valuation allowances of $46 million and $47 million in 2011 and 2010, respectively.