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Summary Of Significant Accounting Policies (Schedule of Components of Investments) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Summary Of Significant Accounting Policies [Line Items] |  |
Investments | $ 666 | $ 440
Catalyst [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
% Interest | 50.00% |
Investments | $ 311 | 339
Water JV [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
% Interest | 30.00% |
Investments | $ 216 | 0
Matterhorn [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
% Interest | 12.50% |
Investments | $ 90 | 54
Other [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Investments | $ 49 | $ 47

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- Definition Sum of the carrying amounts as of the balance sheet date of all investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(h)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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