Income Taxes 2 (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation to US federal statutory rate
Taxes on income at US federal statutory rate	$ 758,000,000	$ 933,000,000	$ 825,000,000
State and local taxes, net of federal tax benefit	93,000,000	101,000,000	84,000,000
Effect on foreign operations	(90,000,000)	(92,000,000)	(67,000,000)
Audit settlement, net	(7,000,000)	(17,000,000)	(3,000,000)
Other, net	8,000,000	(47,000,000)	(27,000,000)
Provision for income taxes	762,000,000	878,000,000	812,000,000
Deferred income tax assets:
Reserves and other accrued liabilities	743,000,000	798,000,000
Pension, postretirement and other employee benefits	794,000,000	697,000,000
Tax credit and loss carryforwards	628,000,000	664,000,000
Other deferred income tax assets	113,000,000	151,000,000
Total deferred income tax assets	2,278,000,000	2,310,000,000
Deferred tax assets valuation allowance	(575,000,000)	(634,000,000)
Net deferred income tax assets	1,703,000,000	1,676,000,000
Deferred income tax liabilities:
Intangible assets	(2,432,000,000)	(2,305,000,000)
Unbilled licensing receivables	(532,000,000)	(345,000,000)
Property, equipment and other assets	(151,000,000)	(176,000,000)
Total deferred income tax liabilities	(3,115,000,000)	(2,826,000,000)
Deferred income tax liabilities, net	(1,412,000,000)	(1,150,000,000)
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	925,000,000
Net deferred income tax assets of discontinued operations	38,000,000
Net deferred income tax liabilities of discontinued operations		182,000,000
Company's share of undistributed earnings of foreign subsidiaries not included in its consolidated federal income tax return	3,990,000,000	4,080,000,000
Change in reserve for uncertain tax positions, excluding related accrued interest and penalties
Unrecognized tax benefits, beginning of year	139,000,000	172,000,000	189,000,000
Additions for current year tax positions	14,000,000	11,000,000	12,000,000
Additions for prior year tax positions	31,000,000	14,000,000	10,000,000
Reductions for prior year tax positions	(26,000,000)	(40,000,000)	(32,000,000)
Cash settlements	(16,000,000)	(17,000,000)	(5,000,000)
Statute of limitation lapses	(2,000,000)	(1,000,000)	(2,000,000)
Unrecognized tax benefits, end of year	140,000,000	139,000,000	172,000,000
Reserve for uncertain tax positions included in liabilities of discontinued operations	48,000,000	53,000,000
Amount included in reserve for uncertain tax positions that would affect Company's effective income tax rate (including discontinued operations) if recognized	111,000,000
Interest and penalty charges related to the reserve for uncertain tax positions	14,000,000	12,000,000	13,000,000
Liabilities for accrued interest and penalty charges related to the reserve for uncertain tax positions	$ 50,000,000	$ 56,000,000
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration date	Dec. 31, 2034
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforward expiration date	Jan. 01, 2015