COMMITMENTS AND GUARANTEES (Operating Leases) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Commitments and Contingencies Disclosure [Abstract]
Operating Lease, Right-of-Use Asset	$ 232			$ 243
Operating Lease, Cost	55
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	57
Lessee, Operating Lease, Liability, Payments, Due Year Two	43
Lessee, Operating Lease, Liability, Payments, Due Year Three	36
Operating leases, future minimum payments due:
2019		$ 53
2020		42
2021		38
2022		32
2023		29
Thereafter		171
Total aggregate rental expense under operating leases		80	$ 59
Operating Lease, Payments	$ 43
Operating Lease, Weighted Average Discount Rate, Percent	5.50%
Operating Lease, Weighted Average Remaining Lease Term	8 years 2 months 12 days
Lessee, Operating Lease, Liability, Payments, Due Year Four	$ 31
Lessee, Operating Lease, Liability, Payments, Due Year Five	29
Lessee, Operating Lease, Liability, Payments, Due after Year Five	121
Lessee, Operating Lease, Liability, Payments, Due	317
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(69)
Operating Lease, Liability	248
Operating Lease, Liability, Current	(44)	0
Operating Lease, Liability, Noncurrent	204	$ 0
Variable and Short-term Lease, Cost	79
Lease, Cost	$ 134