| 2026-07-23 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2026-07-23 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2026-04-23 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2026-04-23 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2026-02-18 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2026-02-18 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2025-10-23 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2025-10-23 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2025-07-24 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2025-07-24 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2025-04-23 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2025-04-23 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2025-02-14 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2025-02-14 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2024-10-23 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2024-10-23 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2024-07-24 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2024-07-24 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2024-05-02 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2024-05-02 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2024-02-14 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2024-02-14 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2023-10-26 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2023-10-26 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2023-07-26 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2023-07-26 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2023-04-26 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2023-04-26 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2023-02-15 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2023-02-15 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2022-10-26 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2022-10-26 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2022-07-27 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2022-07-27 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2022-05-02 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2022-05-02 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2022-02-22 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2022-02-22 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2021-10-29 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2021-10-29 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2021-07-30 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2021-07-30 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2021-04-29 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2021-04-29 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2021-02-22 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2021-02-22 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2020-10-30 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2020-10-30 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2020-07-31 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2020-07-31 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2020-05-01 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2020-05-01 | 10-Q | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2020-02-24 | 10-K | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2020-02-24 | 10-K | Security registered under Section 12(b) | 0.950% Senior Notes Due 2030 · MCO 30 · NYSE |
|---|
| 2019-11-01 | 10-Q | Security registered under Section 12(b) | 1.75% Senior Notes Due 2027 · MCO 27 · NYSE |
|---|
| 2019-08-02 | 10-Q | Stock registered under Section 12(b) | Common Stock · MCO · NYSE |
|---|
| 2018-02-27 | 10-K | Well-known seasoned issuer | No |
|---|
| 2017-02-24 | 10-K | Well-known seasoned issuer | No |
|---|
| 2016-02-25 | 10-K | Well-known seasoned issuer | No |
|---|
| 2015-02-26 | 10-K | Well-known seasoned issuer | No |
|---|
| 2014-02-27 | 10-K | Well-known seasoned issuer | No |
|---|
| 2014-02-27 | 10-K | Voluntary filer | Yes |
|---|