Investments in Unconsolidated Subsidiaries (Balance Sheet and Earnings Activity) (Details) - Eastern Europe, Middle East & Africa [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Net revenues	$ 3,985	$ 4,172
Receivables	289	64
Notes receivable	0	100
Other liabilities [Member]
Schedule of Equity Method Investments [Line Items]
Other liabilities	$ 0	$ 100