Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Summary of Long-Term Debt

Long-Term Debt

Long-term debt consists of borrowings having an original maturity of one year or more. The following is a summary of the Company's long-term debt:

(Dollars in millions)	December 31, 2015		December 31, 2014
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 0.91% at December 31, 2015	$	250	$	—
Fixed rate 1.625% notes due February 2018	450		—
Fixed rate 2.25% notes due February 2020	1,000		—
Fixed rate 3.50% notes due June 2022	398		398
Fixed rate 3.00% notes due February 2025	498		—
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 1.98% at December 31, 2015 and 1.63% at December 31, 2014	300		300
Junior subordinated debt payable to trusts(1):
Floating rate notes due September 2036. These notes bear a combined weighted-average rate of 2.21% at December 31, 2015 and 2.35% at December 31, 2014	36		52
Total debt issued by MUAH	2,932		750
Debt issued by MUB and other subsidiaries
Senior debt:
Fixed rate FHLB of San Francisco advances due February 2016. These notes bear a combined weighted-average rate of 2.50% at December 31, 2015 and 2.56% at December 31, 2014	500		800
Fixed rate 3.00% notes due June 2016	700		700
Fixed rate 1.50% notes due September 2016	499		499
Floating rate notes due September 2016. These notes, which bear interest at 0.75% above 3-month LIBOR, had a rate of 1.35% at December 31, 2015 and 1.00% at December 31, 2014	500		500
Floating rate notes due May 2017. These notes, which bear interest at 0.40% above 3-month LIBOR, had a rate of 0.73% at December 31, 2015 and 0.63% at December 31, 2014	250		250
Fixed rate 2.125% notes due June 2017	499		499
Fixed rate 2.625% notes due September 2018	1,000		1,000
Fixed rate 2.250% notes due May 2019	502		499
Senior debt due to BTMU:
Floating rate debt due January 2018. These notes, which bear interest at 0.85% above 1-month LIBOR, had a rate of 1.09% at December 31, 2015	1,000		—
Floating rate debt notes due January 2018. These notes, which bear interest at 0.87% above 1-month LIBOR, had a rate of 1.11% at December 31, 2015	1,500		—
Floating rate debt notes due January 2018. These notes, which bear interest at 1.03% above 1-month LIBOR, had a rate of 1.27% at December 31, 2015	1,000		—
Subordinated debt:
Fixed rate 5.95% notes due May 2016	703		711
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 1.80% at December 31, 2015 and 1.45% at December 31, 2014	750		750
Capital lease obligations with a combined weighted-average interest rate of 4.92% at December 31, 2015 and December 31, 2014 (1)	14		14
Total debt issued by MUB and other subsidiaries	9,417		6,222
Total long-term debt	$	12,349	$	6,972

(1) Long-term debt assumed through acquisitions.