v3.21.2

Other Financial Data - Summary of Components of Other Assets (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Other Financial Data [Abstract] |  |
Deferred project costs | $ 252 | $ 228
Operating lease right of use asset | 144 | 129
Commissions receivable | 33 | 25
Other | 27 | 26
Total | $ 456 | $ 408

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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