Commitments and Contingencies (Schedule of Outstanding Debt) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011
Floating Rate Debt [Member]
Outstanding debt	$ 3,182	[1]
Remaining terms of outstanding debt in years	9
Fixed Rate Debt [Member]
Outstanding debt	444	[1]
Carrying Value of Loans/Leases from Non-U.S. Entities [Member]
Outstanding debt	$ 3,499	[2]
Remaining terms of outstanding debt in years	9

[1] Remaining terms of up to nine years, subject to these increased cost provisions.

[2] Remaining terms of up to 9 years; the Company bears the risk of any change in tax laws that would subject loan or lease payments thereunder to non-U.S. entities to withholding taxes, subject to customary exclusions.