Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Summary of Long-Term Debt

The following is a summary of the Company's long-term debt:

(Dollars in millions)	June 30, 2017		December 31, 2016
Debt issued by MUAH
Senior debt:
Floating rate senior notes due February 2018. These notes, which bear interest at 0.57% above 3-month LIBOR, had a rate of 1.75% at June 30, 2017 and 1.46% at December 31, 2016	$	250	$	250
Fixed rate 1.625% notes due February 2018	450		449
Fixed rate 2.25% notes due February 2020	997		997
Fixed rate 3.50% notes due June 2022	397		397
Fixed rate 3.00% notes due February 2025	496		496
Senior debt due to BTMU:
Floating rate debt due September 2020. This note, which bears interest at 0.85% above 3-month LIBOR, had a rate of 2.15% at June 30, 2017	3,500		—
Floating rate debt due December 2023. This note, which bears interest at 0.76% above 3-month EURIBOR, had a rate of 0.76% at June 30, 2017	23		—
Floating rate debt due March 2020. This note, which bears interest at 0.86% above 3-month LIBOR, had a rate of 2.11% at June 30, 2017 and 1.82% at December 31, 2016	545		545
Subordinated debt due to BTMU:
Floating rate subordinated debt due December 2023. This note, which bears interest at 1.38% above 3-month LIBOR, had a rate of 2.67% at June 30, 2017 and 2.38% at December 31, 2016	300		300
Junior subordinated debt payable to trusts:
Floating rate note due September 2036. This note had an interest rate of 2.94% at June 30, 2017 and 2.66% at December 31, 2016	36		36
Total debt issued by MUAH	6,994		3,470
Debt issued by MUB
Senior debt:
Floating rate notes due May 2017. These notes, which bear interest at 0.40% above 3-month LIBOR, had a rate of 1.28% at December 31, 2016	—		250
Fixed rate 2.125% notes due June 2017	—		500
Fixed rate 2.625% notes due September 2018	999		999
Fixed rate 2.250% notes due May 2019	500		500
Senior debt due to BTMU:
Floating rate debt due January 2018. This note, which bears interest at 0.85% above 1-month LIBOR, had a rate of 1.47% at December 31, 2016	—		1,000
Floating rate debt due January 2018. This note, which bears interest at 0.87% above 1-month LIBOR, had a rate of 1.49% at December 31, 2016	—		1,500
Floating rate debt due January 2018. This note, which bears interest at 1.03% above 1-month LIBOR, had a rate of 1.65% at December 31, 2016	—		1,000
Subordinated debt due to BTMU:
Floating rate subordinated debt due June 2023. This note, which bears interest at 1.20% above 3-month LIBOR, had a rate of 2.49% at June 30, 2017 and 2.20% at December 31, 2016	750		750
Other	58		58
Total debt issued by MUB	2,307		6,557

Debt issued by other MUAH subsidiaries
Senior Debt due to BTMU:
Various floating rate borrowings due between November 2020 and April 2021. These notes, which bear interest above 3-month LIBOR had a weighted-average interest rate of 1.30% at June 30, 2017 and 0.99% at December 31, 2016	250		250
Various fixed rate borrowings due between September 2019 and May 2023 with a weighted-average interest rate of 2.11% (between 1.71% and 2.44%) at June 30, 2017 and 2.15% (between 1.71% and 2.44%) at December 31, 2016	267		384
Subordinated Debt due to Affiliate:
Various floating rate borrowings due between March 2018 and March 2019. These notes, which bear interest above 6-month LIBOR had a weighted-average interest rate of 2.86% (between 2.80% and 2.95%) at June 30, 2017 and 2.68% (between 2.61% and 2.77%) at December 31, 2016	185		185
Nonrecourse Debt due to BTMU:
Various floating rate nonrecourse borrowings due to BTMU between June 2017 and December 2021. These notes, which bear interest above 1- or 3-month LIBOR had a weighted-average interest rate of 2.44% (between 1.47% and 2.88%) at June 30, 2017 and 1.67% (between 0.25% and 2.41%) at December 31, 2016	125		127
Nonrecourse Debt:
Fixed rate nonrecourse borrowings due December 2026 which had an interest rate of 5.34% at June 30, 2017 and December 31, 2016	38		39
Various floating rate nonrecourse borrowings due between July 2017 and May 2019. These notes, which bear interest above 1- or 3-month LIBOR had a weighted-average interest rate of 2.41% (between 2.08% and 3.16%) at June 30, 2017 and 2.04% (between 0.85% and 2.73%) at December 31, 2016	390		398
Total debt issued by other MUAH subsidiaries	1,255		1,383
Total long-term debt	$	10,556	$	11,410