Employee Benefit Plans - Asset Allocation (Details)	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Employee benefit plans
Actual Asset Allocations:	100.00%	100.00%
Target Asset Allocations:	100.00%	100.00%
Pension Benefits \| Equity securities
Employee benefit plans
Actual Asset Allocations:	56.00%	56.00%
Target Asset Allocations:	60.00%	60.00%
Pension Benefits \| Debt securities
Employee benefit plans
Actual Asset Allocations:	39.00%	38.00%
Target Asset Allocations:	40.00%	40.00%
Pension Benefits \| Real Estate Funds
Employee benefit plans
Actual Asset Allocations:	5.00%	6.00%
Pension Benefits \| Cash equivalents
Employee benefit plans
Actual Asset Allocations:	0.00%	0.00%
Post-Retirement Medical Benefits
Employee benefit plans
Actual Asset Allocations:	100.00%	100.00%
Target Asset Allocations:	100.00%	100.00%
Post-Retirement Medical Benefits \| Equity securities
Employee benefit plans
Actual Asset Allocations:	59.00%	60.00%
Target Asset Allocations:	60.00%	60.00%
Post-Retirement Medical Benefits \| Debt securities
Employee benefit plans
Actual Asset Allocations:	39.00%	39.00%
Target Asset Allocations:	40.00%	40.00%
Post-Retirement Medical Benefits \| Real Estate Funds
Employee benefit plans
Actual Asset Allocations:	0.00%	0.00%
Post-Retirement Medical Benefits \| Cash equivalents
Employee benefit plans
Actual Asset Allocations:	2.00%	1.00%

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.

No definition available.

+ Details

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

- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

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

- Definition

Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

+ Details

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

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: