Other Current Liabilities (Schedule Of Other Current Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Other Liabilities, Current [Abstract]
Derivative liabilities	$ 82	$ 244
Accrued interest payable	156	130
Restructuring liabilities	33	48
Other	376	452
Other current liabilities	841	1,066
Installment Payable, Current [Member]
Other Liabilities, Current [Abstract]
Installment payment - see Note 2	230	249
Other Current Liabilities [Member]
Other Liabilities, Current [Abstract]
Derivative liabilities	$ 46	$ 187