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Accumulated other comprehensive loss (Policies)	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Accumulated other comprehensive loss (Policy)	The Company's accumulated other comprehensive loss is comprised of losses on derivative instruments qualifying as hedges, postretirement liability adjustments and gain (loss) on available-for-sale investments.

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- Definition

Disclosure of accounting policy for comprehensive income.

+ References

No definition available.

+ Details

Name:	us-gaap_ComprehensiveIncomePolicyPolicyTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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