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Restructuring - Narrative (Details) - 2017 Plan $ in Millions | 36 Months Ended
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Dec. 31, 2019 USD ($) job_elimination
Restructuring Cost and Reserve [Line Items] |
Completed Plan Total | $ 1,433
Number of positions eliminated | job_elimination | 5,832
Workforce reduction |
Restructuring Cost and Reserve [Line Items] |
Completed Plan Total | $ 619
Technology rationalization |
Restructuring Cost and Reserve [Line Items] |
Completed Plan Total | 119
Lease consolidation |
Restructuring Cost and Reserve [Line Items] |
Completed Plan Total | 69
Asset impairments |
Restructuring Cost and Reserve [Line Items] |
Completed Plan Total | $ 53

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