Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Intangible Assets (Textual) [Abstract]
Amortization charges associated with our finite-lived intangible assets	$ 101	$ 93	$ 290	$ 289
Total estimated amortization charges for finite-lived intangible assets for the remainder of the current fiscal year	103		103
Total estimated amortization charges for finite-lived intangible assets for 2013	423		423
Total estimated amortization charges for finite-lived intangible assets for 2014	406		406
Total estimated amortization charges for finite-lived intangible assets for 2015	393		393
Total estimated amortization charges for finite-lived intangible assets for 2016	372		372
Total estimated amortization charges for finite-lived intangible assets for 2017	$ 230		$ 230