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.

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 http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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

Basis of Presentation (Details) - shares		3 Months Ended	9 Months Ended
Basis of Presentation (Details) - shares	Apr. 01, 2021	Sep. 30, 2021	Sep. 30, 2021	Mar. 31, 2021
Stock-based Compensation Awards [Member]
Basis of Presentation [Abstract]
Antidilutive securities excluded from diluted EPS calculation (in shares)		0	0
CNA [Member]
Basis of Presentation [Abstract]
Subsidiary ownership percentage		89.60%	89.60%
Altium Packaging LLC [Member]
Basis of Presentation [Abstract]
Subsidiary ownership percentage				99.00%
Percentage interest of subsidiary sold	47.00%