Risks And Uncertainties (Details) $ in Millions |
12 Months Ended | |||||
---|---|---|---|---|---|---|
Dec. 31, 2018
USD ($)
business
segment
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
|||
Unusual Risk or Uncertainty [Line Items] | ||||||
Number of SBUs | business | 4 | |||||
Number of strategic business units | segment | 4 | |||||
Segment Reporting, Additional Information about Entity's Reportable Segments | business | 2 | |||||
Cash and Cash Equivalents, at Carrying Value | $ 1,166 | $ 949 | ||||
Percentage of Total Revenue Non-U.S. | 68.00% | |||||
Cash and cash equivalents | $ 2,003 | 1,788 | $ 1,960 | $ 1,951 | ||
Investment in and advances to subsidiaries and affiliates | 1,114 | $ 1,197 | $ 621 | |||
Debt Default Amount | [1] | $ 351 | ||||
Percentage of total revenues from a single customer (less than) | 10.00% | |||||
Cash and Cash Equivalents [Member] | ||||||
Unusual Risk or Uncertainty [Line Items] | ||||||
Cash and Cash Equivalents, at Carrying Value | $ 1,200 | |||||
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