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Goodwill and Other Intangibles
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangibles Goodwill and Other Intangibles
Goodwill. Changes by reporting segment in the carrying amount of Goodwill for the years ended December 31, 2024 and 2023, including the effect of foreign exchange rates on non-U.S.-dollar denominated balances, were as follows.
TABLE 73: GOODWILL
(In Millions)ASSET SERVICINGWEALTH
MANAGEMENT		TOTAL
Balance at December 31, 2022$611.0 $80.3 $691.3 
Foreign Exchange Rates10.9 0.1 11.0 
Balance at December 31, 2023$621.9 $80.4 $702.3 
Foreign Exchange Rates(7.3)(0.1)(7.4)
Balance at December 31, 2024$614.6 $80.3 $694.9 
The goodwill impairment test is performed at least annually at the reporting-unit level. The Corporation has determined its reporting units for this purpose to be Asset Servicing and Wealth Management. Goodwill was tested for impairment during the fourth quarter of 2024 using a quantitative assessment in which the estimated fair values of the reporting units are compared to their carrying values. Impairment is deemed to exist if the carrying value of a reporting unit exceeds its estimated fair value. Based upon the quantitative assessments, there were no impairments to goodwill in 2024.
Other Intangible Assets Subject to Amortization. The gross carrying amount and accumulated amortization of other intangible assets subject to amortization as of December 31, 2024 and 2023 were as follows.
TABLE 74: OTHER INTANGIBLE ASSSETS SUBJECT TO AMORTIZATION

DECEMBER 31,
(In Millions)20242023
Gross Carrying Amount$127.0 $135.0 
Less: Accumulated Amortization68.9 63.4 
Net Book Value$58.1 $71.6 
TABLE 75: CHANGES IN OTHER INTANGIBLE ASSETS
(In Millions)
Balance at December 31, 2022$77.6 
Amortization(9.3)
Foreign Exchange Rates3.3 
Balance at December 31, 202371.6 
Amortization(9.2)
Foreign Exchange Rates(4.3)
Balance at December 31, 2024$58.1 
Other intangible assets consist primarily of the value of acquired client relationships and are included in Other Assets on the consolidated balance sheets. Amortization for the years 2025, 2026, 2027, 2028, and 2029 is estimated to be $8.4 million, $8.0 million, $7.8 million, $7.2 million, and $7.2 million, respectively.
Capitalized Software. The gross carrying amount and accumulated amortization of capitalized software as of December 31, 2024 and 2023 were as follows.
TABLE 76: CAPITALIZED SOFTWARE
DECEMBER 31,
(In Millions)20242023
Gross Carrying Amount$4,259.6 $3,781.7 
Less: Accumulated Amortization2,104.5 1,754.2 
Net Carrying Value$2,155.1 $2,027.5 
Capitalized software, which is included in Other Assets on the consolidated balance sheets, consists primarily of costs related to purchased software and internal-use software development projects that result in new or enhanced functionality, including compensation and other allowable internal costs. Fees paid for the use of software services that do not convey a software license are expensed as incurred. Amortization expense, which is included in Equipment and Software on the consolidated statements of income, totaled $597.6 million in 2024, $509.4 million in 2023, and $434.2 million in 2022.