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BENEFIT PLANS - Net Periodic Benefit Cost (Income) Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 30, 2021	Oct. 31, 2020
Pension Benefits
Net Periodic Benefit (Income) Cost
Interest cost	$ 10	$ 9
Expected return on plan assets	(21)	(26)
Amortization of prior service credit	0	0
Net periodic benefit (income) cost	(11)	(17)
Contributions to benefit plans	0	0
Other Postretirement Benefits
Net Periodic Benefit (Income) Cost
Interest cost	0	0
Expected return on plan assets	0	0
Amortization of prior service credit	1	0
Net periodic benefit (income) cost	1	0
Contributions to benefit plans	$ (1)	$ (1)

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Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan.

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

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