Income Taxes 2 (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation to US Federal Statutory Income Tax Rate
US federal statutory tax rate	35.00%
Taxes on income at U.S. federal statutory rate	$ 896,000,000	$ 763,000,000	$ 467,000,000
State and local taxes, net of federal tax benefit	92,000,000	82,000,000	57,000,000
Effect of foreign operations	(64,000,000)	(73,000,000)	(50,000,000)
Change in tax law	0	0	62,000,000
Audit settlements, net	(3,000,000)	(6,000,000)	(28,000,000)
Other, net	(29,000,000)	(15,000,000)	(30,000,000)
Provision (benefit) for income taxes	892,000,000	751,000,000	478,000,000
Deferred income tax assets:
Provision for expenses and losses	801,000,000	832,000,000
Pension, postretirement and other employee benefits	641,000,000	682,000,000
Tax credit and loss carryforwards	284,000,000	277,000,000
Deferred income tax assets other	136,000,000	132,000,000
Total deferred income tax assets	1,862,000,000	1,923,000,000
Deferred tax assets valuation allowance	(249,000,000)	(235,000,000)
Net deferred income tax assets	1,613,000,000	1,688,000,000
Deferred tax liabilities:
Intangible assets	(1,995,000,000)	(2,011,000,000)
Property, equipment and other assets	(610,000,000)	(400,000,000)
Total deferred income tax liabilities	(2,605,000,000)	(2,411,000,000)
Deferred income tax liabilities, net	(992,000,000)	(723,000,000)
Net noncurrent deferred income taxes assets of discontinued operations	29,000,000	29,000,000
Net operating loss carryforwards	750,000,000
Net operating loss carryforward expiration dates	2013 through 2032
Company's share of undistributed earnings of foreign subsidiaries not included in its consolidated federal income tax return	3,540,000,000	3,250,000,000
Change in the reserve for uncertain tax positions, excluding related accrued interest and penalties
Unrecognized tax benefits, beginning of year	195,000,000	214,000,000	230,000,000
Additions for current year tax positions	12,000,000	11,000,000	14,000,000
Additions for prior year tax positions	10,000,000	12,000,000	17,000,000
Reductions for prior year tax positions	(33,000,000)	(18,000,000)	(43,000,000)
Cash settlements	(8,000,000)	(23,000,000)	(4,000,000)
Statute of limitation lapses	(3,000,000)	(1,000,000)
Unrecognized tax benefits, end of year	173,000,000	195,000,000	214,000,000
Reserve for uncertain tax positions, discontinued operations	56,000,000	54,000,000
Unrecognized tax benefits that would impact effective tax rate	141,000,000
Interest and penalty charges related to the reserve for uncertain tax positions	13,000,000	12,000,000	11,000,000
Liabilities for accrued interest and penalty charges related to the reserve for uncertain tax positions	$ 62,000,000	$ 61,000,000