Commercial Paper and Other Short-Term Borrowings (Tables)

6 Months Ended

Jun. 30, 2021

Short-term Debt [Abstract]

Summary of Commercial Paper and Other Short-Term Borrowings

The following table is a summary of the Company's commercial paper and other short-term borrowings.

(Dollars in millions)	June 30, 2021		December 31, 2020
Debt issued by MUB
Commercial paper, with a weighted average interest rate of 0.09% and 0.16% at June 30, 2021 and December 31, 2020, respectively	$	10	$	23
Total debt issued by MUB	10		23
Debt issued by other MUAH subsidiaries
Short-term debt due to MUFG Bank, Ltd., with a weighted average interest rate of 0.60% at December 31, 2020	—		9
Short-term debt due to affiliates, with weighted average interest rates of -0.08% and -0.08% at June 30, 2021 and December 31, 2020, respectively	72		78
Total debt issued by other MUAH subsidiaries	72		87
Total commercial paper and other short-term borrowings	$	82	$	110