XML 76 R114.htm IDEA: XBRL DOCUMENT v2.4.0.8
Discontinued Operations - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2013
Dec. 31, 2013
Operating Segments [Member]
Business Services [Member]
Dec. 31, 2013
Operating Segments [Member]
Business Services [Member]
Plans
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
After-tax gain on sale of business $ 38 $ 38 $ 65 $ 65
Type of college savings plan       529