Fair Value (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Fair Value Disclosures [Abstract]
Fair Value Assets Level 2 to Level 1, Transfers	$ 1		$ 24
Fair Value, Assets, Level 1 to Level 2, Transfers			$ 1