| Document and Entity Information | Dec. 08, 2021 |
| Entity Listings [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 8, 2021 |
| Entity Registrant Name | OTIS WORLDWIDE CORPORATION |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39221 |
| Entity Tax Identification Number | 83-3789412 |
| Entity Address, Address Line One | One Carrier Place |
| Entity Address, City or Town | Farmington |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06032 |
| City Area Code | 860 |
| Local Phone Number | 674-3000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001781335 |
| Common Stock [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Stock ($0.01 par value) |
| Trading Symbol | OTIS |
| Security Exchange Name | NYSE |
| 0.000% Notes due 2023 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.000% Notes due 2023 |
| Trading Symbol | OTIS/23 |
| Security Exchange Name | NYSE |
| 0.318% Notes due 2026 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.318% Notes due 2026 |
| Trading Symbol | OTIS/26 |
| Security Exchange Name | NYSE |
| 0.934% Notes due 2031 [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | 0.934% Notes due 2031 |
| Trading Symbol | OTIS/31 |
| Security Exchange Name | NYSE |
