XML 46 R37.htm IDEA: XBRL DOCUMENT v3.22.1

Leases - Additional Information (Detail)	3 Months Ended
	Apr. 02, 2022
Lessee Lease Description [Line Items]
Lease weighted average remaining lease term	7 years 2 months 26 days
Minimum
Lessee Lease Description [Line Items]
Leases, remaining lease term	0 years
Maximum
Lessee Lease Description [Line Items]
Leases, remaining lease term	10 years

X

- 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

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

X

- Definition

Lease weighted average remaining lease term.

+ References

No definition available.

+ Details

Name:	ww_LeaseWeightedAverageRemainingLeaseTerm
Namespace Prefix:	ww_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee remaining lease term.

+ References

No definition available.

+ Details

Name:	ww_LesseeRemainingLeaseTerm
Namespace Prefix:	ww_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: