Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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+ Details

Accounting Policies (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	Dec. 31, 2011
Variable Interest Entity [Line Items]
Assets	$ 3,102		$ 3,102		$ 3,058
Liabilities	2,753		2,753		2,787
Accounting Policies (Textual) [Abstract]
Weighted average common shares adjustment related to stock-based compensation	1.7	1.6	1.7	1.8
Anti-dilutive potential common shares related to stock-based compensation plans	1.9	2.6	1.8	2.3
Maturities of short term investments			3 months
New Collateralized Loan Obligation Entity Formed In October Two Thousand Twelve [Member]
Variable Interest Entity [Line Items]
Assets	308		308
Liabilities	$ 267		$ 267