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Business Segments - Capital Expenditures Depreciation and Amortization (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | $ 647 | $ 770 | $ 811
Depreciation and amortization | 859 | 795 | 778
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 628 | 737 | 774
Depreciation and amortization | 824 | 760 | 746
Operating Segments | Americas |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 302 | 369 | 406
Depreciation and amortization | 490 | 430 | 414
Operating Segments | Europe, Middle East and Africa |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 235 | 227 | 180
Depreciation and amortization | 201 | 197 | 201
Operating Segments | Asia Pacific |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 91 | 141 | 188
Depreciation and amortization | 133 | 133 | 131
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 19 | 33 | 37
Depreciation and amortization | $ 35 | $ 35 | $ 32

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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