Investments in Affiliates (Schedule of Balances with Affiliates) (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Trade receivables		$ 1	$ 0
Non-trade receivables		35	29
Total due from affiliates		36	29
Short-term borrowings	[1]	67	50
Trade payables		43	46
Current Other liabilities		10	11
Total due to affiliates		$ 120	$ 107

[1] The Company has agreements with certain affiliates whereby excess affiliate cash is lent to and managed by the Company at variable interest rates governed by those agreements.