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Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2020 | Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 2,708 | $ 3,673
Accumulated Amortization and Impairment | 2,043 | 2,890
Total | 665 | 783
Estimated amortization for intangible assets |  |
Remainder of 2020 | 40 |
2021 | 140 |
2022 | 100 |
2023 | 88 |
2024 | 71 |
2025 | 52 |
Thereafter | 174 |
Total | 665 | 783
Customer-related and contract-based |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 2,273 | 2,264
Accumulated Amortization and Impairment | 1,690 | 1,600
Total | 583 | 664
Estimated amortization for intangible assets |  |
Total | 583 | 664
Tradenames |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 14 | 1,029
Accumulated Amortization and Impairment | 12 | 956
Total | 2 | 73
Impairment of intangible assets | 1,000 |
Estimated amortization for intangible assets |  |
Total | 2 | 73
Technology and other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | 421 | 380
Accumulated Amortization and Impairment | 341 | 334
Total | 80 | 46
Estimated amortization for intangible assets |  |
Total | $ 80 | $ 46

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