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)	December 31, 2018		December 31, 2017
Debt issued by MUB
Commercial paper, with a weighted average interest rate of 2.39% and 1.26% at December 31, 2018 and December 31, 2017, respectively	$	382	$	347
Federal Home Loan Bank advances, with a weighted average interest rate of 2.52% and 1.42% at December 31, 2018 and December 31, 2017, respectively	7,800		5,750
Total debt issued by MUB	8,182		6,097
Debt issued by other MUAH subsidiaries
Short-term debt due to MUFG Bank, Ltd., with weighted average interest rates of 3.01% and 1.88% at December 31, 2018 and December 31, 2017, respectively	145		168
Short-term debt due to affiliates, with weighted average interest rates of (-0.07)% and (-0.09)% at December 31, 2018 and December 31, 2017, respectively	936		801
Total debt issued by other MUAH subsidiaries	1,081		969
Total commercial paper and other short-term borrowings	$	9,263	$	7,066

At December 31, 2018, Federal Home Loan Bank advances had a weighted average maturity of 168 days. The commercial paper outstanding had a weighted average remaining maturity of 97 days. The short-term debt due to MUFG Bank, Ltd. had a weighted average remaining maturity of 53 days and the short-term debt due to affiliates had a weighted average remaining maturity of 244 days.

Short-term debt due to MUFG Bank, Ltd. consists of both secured and unsecured fixed and floating rate borrowings.

MUSA maintains an uncommitted, unsecured lending facility with Mitsubishi UFJ Securities Holdings Co., Ltd. under which it may borrow up to JPY 160 billion (USD equivalent $1.4 billion). Under the terms of the facility, MUSA can choose to borrow in Japanese Yen or US Dollars. Japanese Yen denominated borrowings include an irrevocable extension option allowing MUSA to extend the maturity of an individual draw by 100 days at any time prior to its original, stated maturity. At December 31, 2018, MUSA had JPY 103 billion ($936 million USD equivalent) drawn under this facility.