Acquisitions and Divestitures (Divestitures) (Details Textual) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 22, 2013 McGraw Hill Education [Member]	Dec. 31, 2013 McGraw Hill Education [Member]	Dec. 31, 2012 McGraw Hill Education [Member] Positions	Dec. 31, 2011 Broadcasting Group [Member]	Dec. 31, 2011 C&C [Member] LinkedIn Corporation [Member]	Aug. 27, 2013 India Index Services & Products Ltd [Member] CRISIL Limited [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax gain on dispositions		$ 24								$ 13
Percent of equity interest sold											49.00%
Cash proceeds from sale of business						2,400			216
Pre-tax gain on sale from discontinued operations			888	0	122				123
After-tax gain on sale of business			589	0	74		589
Impairment charges, goodwill and intangible assets								497
Restructuring costs								39
Workforce reduction, positions								530
Direct transaction costs for legal and professional fees								17
Lease commitment charges								3
Vacation accrual reversal								17
Impairment charges, goodwill								478
Impairment charges, excluding goodwill	$ (26)		$ 26	$ 26				$ 19