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Restructuring - Schedule of Restructuring and Restructuring-related Charges Incurred From Inception (Details) $ in Millions | Sep. 30, 2024 USD ($)
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Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | $ 122
Restructuring-related charges, incurred since inception | 65
Total charges, incurred since inception | 187
Realignment Plan |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 32
Restructuring-related charges, incurred since inception | 10
Total charges, incurred since inception | 42
Network Optimization Project |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 10
Restructuring-related charges, incurred since inception | 29
Total charges, incurred since inception | 39
Project Phoenix |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 80
Restructuring-related charges, incurred since inception | 26
Total charges, incurred since inception | 106
Severance and termination costs |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 115
Severance and termination costs | Realignment Plan |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 31
Severance and termination costs | Network Optimization Project |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 6
Severance and termination costs | Project Phoenix |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 78
Contract termination and other costs |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 7
Contract termination and other costs | Realignment Plan |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 1
Contract termination and other costs | Network Optimization Project |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | 4
Contract termination and other costs | Project Phoenix |
Restructuring Cost and Reserve [Line Items] |
Restructuring charges, incurred since inception | $ 2

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- Definition Amount of costs incurred to date for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.b.1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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