XML 75 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Investments and Related Matters Other Segments (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Schedule of Investments [Line Items]    
Investments $ 14,500us-gaap_Investments $ 12,261us-gaap_Investments
Other Segments [Member]    
Schedule of Investments [Line Items]    
Equity method investments 298us-gaap_EquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
284us-gaap_EquityMethodInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Other investments 241us-gaap_OtherInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
151us-gaap_OtherInvestments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
Investments $ 539us-gaap_Investments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember
$ 435us-gaap_Investments
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_AllOtherSegmentsMember