Accrued Expenses And Other Payables (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Accrued Liabilities and Other Liabilities [Abstract]
Derivative Liability	$ 768	$ 761
Employee-related Liabilities	306	337
Accrued Income Taxes, Current	38	0
Accrual for Taxes Other than Income Taxes, Current	105	98
Reinsurance Payable	13	15
Liability for Claims and Claims Adjustment Expense	300	277
Contract with Customer, Liability	367	501
Accrued expenses and other payables	1,231	924
Total accrued expenses and other payables	$ 3,128	$ 2,913