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Retirement Plans (Cost of Retirement Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Savings Plan expense	$ 17	$ 14	$ 14
Retirement Plans expense	$ 24	$ 26	$ 23

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- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
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Amount of cost for defined contribution plan.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 70
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