Years of service used in calculating average eligible compensation for defined benefit plan participants.

No definition available.

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- Definition

The assumed health care cost trend rate for the next year used to measure the benefit obligation. This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

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- Definition

Incremental Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. Subject to limits set by the Internal Revenue Service.

+ References

No definition available.

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- References

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- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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- References

No definition available.

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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- Definition

Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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- Definition

Ultimate trend rate for health care cost for defined benefit postretirement plan.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of cost for defined contribution plan.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Percentage employer matches of the employee's percentage contribution matched.

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EMPLOYEE BENEFITS - Narrative (Details) - USD ($)			12 Months Ended
EMPLOYEE BENEFITS - Narrative (Details) - USD ($)	Sep. 12, 2018	Jan. 01, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Years of service used in determining benefits			5 years
Net actuarial losses			$ 618,000,000	$ 585,000,000
401(k) Plan
Employer matching contribution percentage		100.00%
Employer matching contribution, Percent of employees' pay		4.00%
Employer matching contribution, addition			2.00%
Employer contribution amount			$ 68,000,000	$ 61,000,000	$ 55,000,000
Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate			4.33%	3.67%	4.19%
Employer contributions	$ 50,000,000		$ 50,000,000	$ 0
Expected contribution			$ 0
Non-Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate			4.24%	3.53%	4.05%
Employer contributions			$ 8,000,000	$ 8,000,000
Expected contribution			$ 9,000,000
Postretirement Benefit Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate			3.98%	3.20%
Expected contribution			$ 1,000,000
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Assumed annual rate of increase in the per capita cost of covered health care benefits			6.50%	7.00%
Ultimate health care cost trend rate			5.00%	5.00%