DEBT (Details)			1 Months Ended	3 Months Ended	6 Months Ended			9 Months Ended		12 Months Ended
	Apr. 04, 2021	Jul. 02, 2018 USD ($)	May 31, 2015 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 29, 2019	Sep. 30, 2018 USD ($)	Mar. 28, 2020	Dec. 31, 2018	Apr. 03, 2021	Mar. 31, 2019 USD ($)
Debt Disclosure [Line Items]
Debt Instrument, Debt Default, Interest Rate In Excess Of Applicable Rate		2.00%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net				$ 27,800,000	$ 27,800,000						$ 31,000,000.0
Line Of Credit Facility, Periodic Payment, Principal, Percentage Multiplied By Funded Amount		0.25%
Proceeds from issuance of senior notes, net of issuance costs					$ 0		$ 1,244,713,000
Senior Notes [Member] | 5.50% Senior Notes [Member]
Debt Disclosure [Line Items]
Principal amount of debt issued			$ 500,000,000.0
Stated interest rate of debt instrument			5.50%	5.50%	5.50%
Proceeds from issuance of senior notes, net of issuance costs			$ 488,400,000
Debt issuance costs			$ 11,600,000
Debt redemption percentage price, Specified Price			105.50%
Repurchase price, percentage of principal amount			101.00%
Secured Debt [Member]
Debt Disclosure [Line Items]
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net		$ 30,000,000
Principal amount of debt issued		1,275,000,000
Long-term Debt		$ 1,245,000,000
Minimum [Member] | Senior Notes [Member] | 5.50% Senior Notes [Member]
Debt Disclosure [Line Items]
Debt redemption notice period			30 days
Maximum [Member] | Senior Notes [Member] | 5.50% Senior Notes [Member]
Debt Disclosure [Line Items]
Debt redemption notice period			60 days
Percentage of debt redeemed			35.00%
Level 2 [Member] | Fair Value [Member] | Senior Notes [Member] | 5.50% Senior Notes [Member]
Debt Disclosure [Line Items]
Long-term debt, 5.50% Senior Notes				$ 505,095,000	$ 505,095,000						503,410,000
Level 2 [Member] | Carrying Value [Member] | Senior Notes [Member] | 5.50% Senior Notes [Member]
Debt Disclosure [Line Items]
Long-term debt, 5.50% Senior Notes				494,684,000	$ 494,684,000						493,959,000
Revolving Credit Facility [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Debt Instrument, Prepayment Penalty, Percent		1.00%
Extinguishment of Debt, Amount				25,000,000
Maximum borrowing capacity of unsecured revolving credit facility		$ 100,000,000
Line Of Credit Facility, Unused Capacity, Percentage Over LIBOR Multiplied By Daily Amount Available Under Facility					50.00%
Debt Instrument, Debt to Earnings Before Interest, Taxes, Depreciation and Amortization Ratio, Minimum						3.50			2.75
Letters of Credit Outstanding, Amount				800,000	$ 800,000
Revolving Credit Facility [Member] | Minimum [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Line of Credit Facility, Commitment Fee Percentage					0.20%
Revolving Credit Facility [Member] | Maximum [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Line of Credit Facility, Commitment Fee Percentage					0.30%
Revolving Credit Facility [Member] | Level 2 [Member] | Fair Value [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Long-term debt, 5.50% Senior Notes				1,165,089,000	$ 1,165,089,000						1,152,044,000
Revolving Credit Facility [Member] | Level 2 [Member] | Carrying Value [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Long-term debt, 5.50% Senior Notes				$ 1,124,331,000	$ 1,124,331,000						$ 1,146,842,000
Federal Funds Rate [Member] | Secured Debt [Member]
Debt Disclosure [Line Items]
Spread for interest rate					0.50%
London Interbank Offered Rate (LIBOR) [Member] | Secured Debt [Member]
Debt Disclosure [Line Items]
Spread for interest rate					1.00%
Forecast [Member] | Revolving Credit Facility [Member] | Line of Credit [Member]
Debt Disclosure [Line Items]
Debt Instrument, Debt to Earnings Before Interest, Taxes, Depreciation and Amortization Ratio, Minimum	2.75							3.25		3.00