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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	Apr. 03, 2021	Mar. 17, 2021	Sep. 30, 2020	Mar. 28, 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	$ 2.4		$ 2.4	$ 2.1
Carrying Amount | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets
Assets:
Other	43.5		29.8	22.6
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	460.2		64.0	691.9
Carrying Amount | Fair value, inputs, level 2 | Credit facilities | Term loans
Liabilities:
Debt instruments	690.0		710.0	740.0
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	160.0		20.0	160.0
Carrying Amount | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt
Liabilities:
Debt instruments	7.6		1.1	8.7
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring
Assets:
Cash equivalents	2.4		2.4	2.1
Estimated Fair Value | Fair value, inputs, level 1 | Fair Value, Measurements, Recurring | Investment securities in non-qualified retirement plan assets
Assets:
Other	43.5		29.8	22.6
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	460.2		64.0	691.9
Estimated Fair Value | Fair value, inputs, level 2 | Credit facilities | Term loans
Liabilities:
Debt instruments	690.0		710.0	740.0
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 4.500% Senior Notes
Liabilities:
Debt instruments	464.6		476.4	400.5
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 5.250% Senior Notes
Liabilities:
Debt instruments	261.6		266.6	239.1
Estimated Fair Value | Fair value, inputs, level 2 | Senior notes | 4.000% Senior Notes
Liabilities:
Debt instruments	497.5		0.0	0.0
Estimated Fair Value | Fair value, inputs, level 2 | Receivables facility
Liabilities:
Debt instruments	160.0		20.0	160.0
Estimated Fair Value | Fair value, inputs, level 2 | Fair Value, Measurements, Recurring | Other debt
Liabilities:
Debt instruments	$ 7.6		$ 1.1	$ 8.7

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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