Dispositions (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on operating assets	$ (5)	$ 113	$ 451	$ 130
Asset impairments	5	5	31	35
Other gain (loss), net	(135)	(20)	(140)	(60)
Discontinued Operations [Abstract]
Total revenues	0	818	1,415	2,388
Pretax income (loss)	3	114	(94)	226
Income tax benefit (provision)	(2)	111	29	62
Net income (loss)	1	225	(65)	288
Net income (loss) attributable to Time Warner Inc. shareholders	1	225	(65)	288
Per share information attributable to Time Warner Inc. common shareholders:
Basic net income (loss) per common share	$ 0	$ 0.25	$ (0.08)	$ 0.31
Average basic common shares outstanding	850.9	916.8	872.2	926.1
Diluted net income (loss) per common share	$ 0	$ 0.24	$ (0.07)	$ 0.30
Average diluted common shares outstanding	870.2	938.8	891.6	948.7
Warner Music Group [Member]
Discontinued Operations [Abstract]
Income tax benefit (provision)		$ 137