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RETIREMENT BENEFIT PLANS - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Actual contribution to defined benefit pension plans	$ 7
Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected future employer contributions, current fiscal year	15
Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected future employer contributions, current fiscal year	$ 25

X

- Definition

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

+ References

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