Earnings (Loss) Per Share - Narrative (Details) - shares shares in Millions	3 Months Ended
Apr. 02, 2023	Mar. 27, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, shares would have been included if no net loss (in shares)	2.0
Antidilutive securities excluded from computation of earnings per share, amount, treasury stock method (in shares)	0.1
Employee stock option and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	4.2	2.5

Antidilutive Securities Additional Computation of Earnings Share, Amount

No definition available.

Name:	has_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountTreasuryStockMethod
Namespace Prefix:	has_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Antidilutive Securities Excluded From Computation of Earnings Per Share, Shares Would Have Been Included If No Net Loss

+ References

No definition available.

+ Details

Name:	has_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareSharesWouldHaveBeenIncludedIfNoNetLoss
Namespace Prefix:	has_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

+ Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

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

- Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis=has_EmployeeStockOptionAndRestrictedStockUnitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: