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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	Jul. 03, 2021	Mar. 17, 2021	Sep. 30, 2020	Jun. 27, 2020	Oct. 22, 2019	Dec. 15, 2016
Senior notes | 4.500% Senior Notes
Liabilities:
Interest rate of debt (percentage)	4.50%		4.50%	4.50%	4.50%
Senior notes | 5.250% Senior Notes
Liabilities:
Interest rate of debt (percentage)	5.25%		5.25%	5.25%		5.25%
Senior notes | 4.000% Senior Notes
Liabilities:
Interest rate of debt (percentage)	4.00%	4.00%	4.00%	4.00%
Carrying Amount | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring
Assets:
Cash equivalents	$ 3.2		$ 2.4	$ 2.2
Carrying Amount | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets
Assets:
Other	46.5		29.8	26.8
Carrying Amount | Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Bonnie Option
Assets:
Other	0.0		23.3	11.3
Carrying Amount | Fair value, inputs, level 2 | Credit facilities | Revolving loans
Liabilities:
Debt instruments	278.8		64.0	106.2
Carrying Amount | Fair value, inputs, level 2 | Credit facilities | Term loans
Liabilities:
Debt instruments	680.0		710.0	730.0
Carrying Amount | Fair value, inputs, level 2 | Senior notes | 4.500% Senior Notes
Liabilities:
Debt instruments	450.0		450.0	450.0
Carrying Amount | Fair value, inputs, level 2 | Senior notes | 5.250% Senior Notes
Liabilities:
Debt instruments	250.0		250.0	250.0
Carrying Amount | Fair value, inputs, level 2 | Senior notes | 4.000% Senior Notes
Liabilities:
Debt instruments	500.0		0.0	0.0
Carrying Amount | Fair value, inputs, level 2 | Receivables facility
Liabilities:
Debt instruments	0.0		20.0	160.0
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt
Liabilities:
Debt instruments	7.9		1.1	1.6
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring
Assets:
Cash equivalents	3.2		2.4	2.2
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets
Assets:
Other	46.5		29.8	26.8
Estimated Fair Value | Fair value, inputs, level 3 | Fair Value, Measurements, Recurring | Bonnie Option
Assets:
Other	0.0		23.3	11.3
Estimated Fair Value | Fair value, inputs, level 2 | Credit facilities | Revolving loans
Liabilities:
Debt instruments	278.8		64.0	106.2
Estimated Fair Value | Fair value, inputs, level 2 | Credit facilities | Term loans
Liabilities:
Debt instruments	680.0		710.0	730.0
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 4.500% Senior Notes
Liabilities:
Debt instruments	468.0		476.4	462.9
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 5.250% Senior Notes
Liabilities:
Debt instruments	260.6		266.6	260.0
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 4.000% Senior Notes
Liabilities:
Debt instruments	498.8		0.0	0.0
Estimated Fair Value | Fair value, inputs, level 2 | Receivables facility
Liabilities:
Debt instruments	0.0		20.0	160.0
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt
Liabilities:
Debt instruments	$ 7.9		$ 1.1	$ 1.6

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