| Goodwill and Intangible Assets |
Goodwill and Intangible AssetsComputer Software and Goodwill: | | | | | | | | | | | | | | | | | Computer software | | Goodwill | | January 1, 2021 | | $ | 437.0 | | | $ | 2,857.9 | | Acquisition (1) | | 65.0 | | | 488.4 | | Additions at cost (2) | | 42.2 | | | — | | | Amortization | | (24.5) | | | — | | | Write-off | | (3.1) | | | — | | Other (3) | | (8.5) | | | (28.1) | | | March 31, 2021 | | $ | 508.1 | | | $ | 3,318.2 | | Acquisition (3) | | (1.0) | | | 2.6 | | Additions at cost (2) | | 33.9 | | | — | | | Amortization | | (26.6) | | | — | | | Write-off | | (0.7) | | | — | | Other (3) | | 2.8 | | | 10.3 | | | June 30, 2021 | | $ | 516.5 | | | $ | 3,331.1 | | Additions at cost (2) | | 46.0 | | | — | | | Amortization | | (30.7) | | | — | | | Write-off | | (0.4) | | | — | | Other (3) | | (5.8) | | | (12.4) | | | September 30, 2021 | | $ | 525.6 | | | $ | 3,318.7 | | | | | | | | January 1, 2022 | | $ | 557.4 | | | $ | 3,493.3 | | | | | | | Additions at cost (2) | | 43.4 | | | — | | | Amortization | | (30.3) | | | — | | Other (3) | | (7.1) | | | (17.9) | | | March 31, 2022 | | $ | 563.4 | | | $ | 3,475.4 | | | | | | | Additions at cost (2) | | 61.9 | | | — | | | Amortization | | (31.8) | | | — | | Other (3) | | (14.6) | | | (38.3) | | | June 30, 2022 | | $ | 578.9 | | | $ | 3,437.1 | | Additions at cost (2) | | 57.3 | | | — | | | Amortization | | (30.7) | | | — | | | Write-off | | (1.1) | | | — | | Other (3) | | (15.7) | | | (36.3) | | | September 30, 2022 | | $ | 588.7 | | | $ | 3,400.8 | |
Other Intangibles: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Customer relationships | | Reacquired rights | | Database | | Other indefinite-lived intangibles | | Other intangibles | | Total | | January 1, 2021 | | $ | 1,912.9 | | | $ | — | | | $ | 1,369.4 | | | $ | 1,275.8 | | | $ | 256.7 | | | $ | 4,814.8 | | Acquisition (1) | | 106.0 | | | 271.0 | | | 116.0 | | | — | | | — | | | 493.0 | | | Additions at cost | | — | | | — | | | — | | | — | | | 0.2 | | | 0.2 | | | Amortization | | (65.6) | | | (5.0) | | | (47.8) | | | — | | | (4.0) | | | (122.4) | | WWN relationship transfer (4) | | — | | | 64.7 | | | — | | | — | | | (64.7) | | | — | | Other (3) | | (5.4) | | | (14.3) | | | (6.3) | | | — | | | (1.9) | | | (27.9) | | | March 31, 2021 | | $ | 1,947.9 | | | $ | 316.4 | | | $ | 1,431.3 | | | $ | 1,275.8 | | | $ | 186.3 | | | $ | 5,157.7 | | Acquisitions (1) | | 2.0 | | | (1.0) | | | (5.0) | | | — | | | — | | | (4.0) | | | Additions at cost | | — | | | — | | | — | | | — | | | 7.3 | | | 7.3 | | | Amortization | | (64.5) | | | (7.4) | | | (47.0) | | | — | | | (4.0) | | | (122.9) | | Other (3) | | 2.5 | | | 4.1 | | | 2.4 | | | — | | | 0.2 | | | 9.2 | | | June 30, 2021 | | $ | 1,887.9 | | | $ | 312.1 | | | $ | 1,381.7 | | | $ | 1,275.8 | | | $ | 189.8 | | | $ | 5,047.3 | | | Additions at cost | | — | | | — | | | — | | | — | | | 0.2 | | | 0.2 | | | Amortization | | (64.3) | | | (7.2) | | | (46.9) | | | — | | | (4.2) | | | (122.6) | | Other (3) | | (3.4) | | | (7.3) | | | (2.4) | | | — | | | (1.9) | | | (15.0) | | | September 30, 2021 | | $ | 1,820.2 | | | $ | 297.6 | | | $ | 1,332.4 | | | $ | 1,275.8 | | | $ | 183.9 | | | $ | 4,909.9 | | | | | | | | | | | | | | | | January 1, 2022 | | $ | 1,793.3 | | | $ | 284.7 | | | $ | 1,285.1 | | | $ | 1,280.0 | | | $ | 181.4 | | | $ | 4,824.5 | | | Additions at cost | | — | | | — | | | — | | | — | | | 0.2 | | | 0.2 | | | Amortization | | (61.9) | | | (5.1) | | | (44.6) | | | — | | | (4.2) | | | (115.8) | | Other (3) | | (4.7) | | | (7.9) | | | (4.6) | | | — | | | (2.0) | | | (19.2) | | | March 31, 2022 | | $ | 1,726.7 | | | $ | 271.7 | | | $ | 1,235.9 | | | $ | 1,280.0 | | | $ | 175.4 | | | $ | 4,689.7 | | | Additions at cost | | — | | | — | | | — | | | — | | | 0.2 | | | 0.2 | | | Amortization | | (59.7) | | | (4.7) | | | (43.2) | | | — | | | (4.4) | | | (112.0) | | Other (3) | | (9.6) | | | (15.7) | | | (5.9) | | | — | | | (5.0) | | | (36.2) | | | June 30, 2022 | | $ | 1,657.4 | | | $ | 251.3 | | | $ | 1,186.8 | | | $ | 1,280.0 | | | $ | 166.2 | | | $ | 4,541.7 | | | Additions at cost | | — | | | — | | | — | | | — | | | 0.2 | | | 0.2 | | | Amortization | | (59.4) | | | (4.5) | | | (43.0) | | | — | | | (4.2) | | | (111.1) | | Other (3) | | (8.5) | | | (16.6) | | | (4.9) | | | — | | | (4.9) | | | (34.9) | | | September 30, 2022 | | $ | 1,589.5 | | | $ | 230.2 | | | $ | 1,138.9 | | | $ | 1,280.0 | | | $ | 157.3 | | | $ | 4,395.9 | |
(1)Related to the acquisition of Bisnode. (2)Primarily related to software-related enhancements on products and purchased software. (3)Primarily due to the impact of foreign currency fluctuations. (4)Reclassification of the net book value of previously recognized WWN relationships intangible asset related to the Bisnode relationship to reacquired rights as a result of the Bisnode acquisition.
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