Quarterly report pursuant to Section 13 or 15(d)

BENEFIT PLANS - Narrative (Details)

v3.10.0.1
BENEFIT PLANS - Narrative (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
year
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Defined Contribution Plan [Abstract]        
Match - Base pay contributed to the plan matches participant contributions 150% of the first 2% of base pay and 100% of the next 2%.      
Defined Contribution Plan, Cost | $ $ 7 $ 5 $ 35 $ 26
Post Retirement Benefits        
Benefit Plans (Textuals) [Abstract]        
Employees retirement age for health care and life insurance benefits under unfunded defined benefit post-retirement plan | year 55      
Deferred Compensation Arrangement With Individual Requisite Service Period 10 years