Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Intangible Assets (Textual) [Abstract]
Amortization charges associated with our finite-lived intangible assets	$ 91	$ 106
Total estimated amortization of finite- lived intangible assets for the remainder of fiscal year	291
Total estimated amortization of finite- lived intangible assets for the remainder of the fiscal year	393
Total estimated amortization of finite- lived intangible assets for 2014	375
Total estimated amortization of finite- lived intangible assets for 2015	363
Total estimated amortization of finite- lived intangible assets for 2016	352
Total estimated amortization of finite- lived intangible assets for 2017	$ 210