SHORT-TERM DEBT - Credit Facility (Details) - USD ($) $ in Millions	2 Months Ended	12 Months Ended
	Dec. 19, 2016	Oct. 31, 2016
Line of Credit Facility [Abstract]
Proceeds from Lines of Credit		$ 255
Repayments of Lines of Credit		$ 255
Line of Credit [Member]
Line of Credit Facility [Abstract]
Credit facility initiation date		Sep. 15, 2014
Initial maximum borrowing capacity - credit facility		$ 400
Short-term debt terms (years)		five
Line of credit facility expiration date		Sep. 15, 2019
Credit facility limit increase		$ 300
Maximum borrowing capacity after increase		700
Line of credit outstanding balance		$ 0
Subsequent Event [Member]
Line of Credit Facility [Abstract]
Proceeds from Lines of Credit	$ 65