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Basis Of Presentation Restructuring Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Restructuring Charges [Abstract] |  |  |  |  |
Restructuring costs, net | [1] | $ 16 | $ 4 | $ 23 | $ 14
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring costs, net | [1] | 16 | 4 | 23 | 14
Operational Efficiencies Program |  |  |  |  |
Restructuring Charges [Abstract] |  |  |  |  |
Restructuring costs, net |  | 6 | 4 | 13 | 14
Restructuring and Related Cost, Expected Cost |  | 166 |  | 166 |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring costs, net |  | 6 | $ 4 | 13 | $ 14
Restructuring and Related Cost, Expected Cost |  | 166 |  | 166 |
Restructuring and Related Cost, Expected Cost Remaining |  | 24 |  | 24 |
Restructuring and Related Cost, Cost Incurred to Date |  | 142 |  | 142 |
2022 Restructuring Program |  |  |  |  |
Restructuring Charges [Abstract] |  |  |  |  |
Restructuring costs, net |  | 10 |  |  |
Restructuring and Related Cost, Expected Cost |  | 15 |  | 15 |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring costs, net |  | 10 |  |  |
Restructuring and Related Cost, Expected Cost |  | 15 |  | $ 15 |
2022 Restructuring Program | Facility Related |  |  |  |  |
Restructuring Charges [Abstract] |  |  |  |  |
Restructuring costs, net |  | 3 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring costs, net |  | 3 |  |  |
2022 Restructuring Program | Personnel Related |  |  |  |  |
Restructuring Charges [Abstract] |  |  |  |  |
Restructuring costs, net |  | 7 |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring costs, net |  | $ 7 |  |  |
[1] | (b)The three months ended September 30, 2022 includes restructuring charges of $2 million at Franchise Group, $8 million at Owned Brokerage Group and $6 million at Corporate and Other. The three months ended September 30, 2021 includes restructuring charges of $1 million at Franchise Group, $2 million at Owned Brokerage Group and $1 million at Corporate and Other. The nine months ended September 30, 2022 includes restructuring charges of $4 million at Franchise Group, $11 million at Owned Brokerage Group and $8 million at Corporate and Other. The nine months ended September 30, 2021 includes restructuring charges of $4 million at Franchise Group, $6 million at Owned Brokerage Group and $4 million at Corporate and Other.

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