Debt Instrument Amount Redeemable

No definition available.

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Namespace Prefix:	prmw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Financing Fee, Amortization Period

+ References

No definition available.

+ Details

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Namespace Prefix:	prmw_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Repayments Of Long-Term Debt, Accrued Interest Payments

+ References

No definition available.

+ Details

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Namespace Prefix:	prmw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Repayments Of Long-Term Debt, Premium Payments

+ References

No definition available.

+ Details

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Namespace Prefix:	prmw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

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Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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- Details

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Debt - 5.500% Senior Notes due in 2025 (Details) - USD ($)		1 Months Ended
	Apr. 30, 2021	Mar. 31, 2017	Jan. 01, 2022	Jan. 02, 2021
5.500% senior notes due in 2025
Debt Instrument [Line Items]
Interest rate on notes (as a percent)			5.50%
5.500% senior notes due in 2025 \| Senior Notes
Debt Instrument [Line Items]
Interest rate on notes (as a percent)	5.50%	5.50%	5.50%
Debt face amount	$ 750,000,000	$ 750,000,000	$ 0	$ 750,000,000.0
Financing fees		$ 11,700,000
Financing fees, amortization period		8 years
Repayment of debt, premium payments	20,600,000
Repayment of debt, accrued interest payments	3,600,000
Write-off of deferred financing fees	$ 6,600,000
6.750% Senior Notes Due in 2020 \| Senior Notes
Debt Instrument [Line Items]
Interest rate on notes (as a percent)		6.75%
Amount to be repaid		$ 625,000,000
10.000% Senior Notes Due in 2021 \| Senior Notes
Debt Instrument [Line Items]
Interest rate on notes (as a percent)		10.00%
Amount to be repaid		$ 100,000,000