Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Interest income
Credit card loans	$ 3,938	$ 3,321
Other loans	712	564
Investment securities	124	101
Other interest income	174	91
Total interest income	4,948	4,077
Interest expense
Deposits	1,210	756
Short-term borrowings	6	0
Long-term borrowings	245	189
Total interest expense	1,461	945
Net interest income	3,487	3,132
Provision for credit losses	1,497	1,102
Net interest income after provision for credit losses	1,990	2,030
Other income
Discount and interchange revenue, net	371	330
Protection products revenue	42	43
Loan fee income	200	166
Transaction processing revenue	87	67
Gains (losses) on equity investments	0	(18)
Other income	23	22
Total other income	723	610
Other expense
Employee compensation and benefits	671	625
Marketing and business development	250	241
Information processing and communications	163	139
Professional fees	292	232
Premises and equipment	20	22
Other expense	913	124
Total other expense	2,309	1,383
Income before income taxes	404	1,257
Total NonInterest Income Expenses	-1586.0	-773.0	0.0	0	0
Income tax expense	96	289
Net income	308	968
Net income allocated to common stockholders	$ 274	$ 931
Basic earnings per common share	$ 1.10	$ 3.55
Diluted earnings per common share	$ 1.10	$ 3.55

Includes discount revenue and acquirer interchange net of interchange paid to third-party issuers. Discount revenue is earned from fees charged to merchants with whom the entity has entered into card acceptance agreements for processing cardholder purchase transactions and acquirer interchange revenue from merchant acquirers on all Discover Network card transactions made by cardholders at merchants with whom merchant acquirers have entered into card acceptance agreements for processing cardholder purchase transactions.

No definition available.