Business, Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014 Segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of segments	6
Accounting Standards Update 2011-06 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption	$ 57
Accounting Standards Update 2013-11 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption	$ 277