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SEGMENT INFORMATION (Details - Consolidated total revenues and real estate and other fixed assets by major geographic area) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total Revenues $ 11,815 $ 12,914 $ 12,561 $ 12,456 $ 12,560 $ 11,486 $ 11,631 $ 11,712 $ 49,746 $ 47,389 $ 49,520
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation 1,953       2,172       1,953 2,172 2,522
North America                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total Revenues                 36,862 31,003 34,149
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation 1,333       1,479       1,333 1,479 1,630
International                      
Revenues from External Customers and Long-Lived Assets [Line Items]                      
Total Revenues                 12,884 16,386 15,371
Real Estate and Other Fixed Assets, Net of Accumulated Depreciation $ 620       $ 693       $ 620 $ 693 $ 892