Business Segments (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of reportable business segments

(Dollars in millions)	Regional Bank		U.S. Wholesale & Investment Banking		Transaction Banking			MUSA		Other			MUFG Americas Holdings Corporation
Results of operations
Net interest income (expense)	$	2,195	$	415	$	264		$	200	$	233		$	3,307
Noninterest income	451		373		59			300		994			2,177
Total revenue	2,646		788		323			500		1,227			5,484
Noninterest expense	2,058		418		255			443		1,103			4,277
(Reversal of) provision for credit losses	65		42		(3		)	—		2			106
Income (loss) before income taxes and including noncontrolling interests	523		328		71			57		122			1,101
Income tax expense (benefit) (1)	105		122		19			17		(211		)	52
Net income (loss) including noncontrolling interest	418		206		52			40		333			1,049
Deduct: net loss from noncontrolling interests	—		—		—			—		24			24
Net income (loss) attributable to MUAH	$	418	$	206	$	52		$	40	$	357		$	1,073
Total assets, end of period	$	73,554	$	20,933	$	941		$	33,844	$	38,828		$	168,100

(1) Income tax expense (benefit) includes certain management accounting classification adjustments.

As of and for the Twelve Months Ended December 31, 2017:

(Dollars in millions)	Regional Bank		U.S. Wholesale & Investment Banking			Transaction Banking		MUSA		Other			MUFG Americas Holdings Corporation
Results of operations
Net interest income (expense)	$	2,051	$	417		$	247	$	234	$	255		$	3,204
Noninterest income	442		370			64		351		783			2,010
Total revenue	2,493		787			311		585		1,038			5,214
Noninterest expense	1,961		403			229		445		946			3,984
(Reversal of) provision for credit losses	22		(104		)	1		—		(22		)	(103		)
Income (loss) before income taxes and including noncontrolling interests	510		488			81		140		114			1,333
Income tax expense (benefit) (1)	178		(197		)	33		59		226			299
Net income (loss) including noncontrolling interest	332		685			48		81		(112		)	1,034
Deduct: net loss from noncontrolling interests	—		—			—		—		43			43
Net income (loss) attributable to MUAH	$	332	$	685		$	48	$	81	$	(69	)	$	1,077
Total assets, end of period	$	67,804	$	20,461		$	1,063	$	32,062	$	33,160		$	154,550

(1) Income tax expense (benefit) includes certain management accounting classification adjustments.

As of and for the Twelve Months Ended December 31, 2016:

(Dollars in millions)	Regional Bank		U.S. Wholesale & Investment Banking		Transaction Banking		MUSA		Other		MUFG Americas Holdings Corporation
Results of operations
Net interest income (expense)	$	1,952	$	541	$	202	$	164	$	194	$	3,053
Noninterest income	449		368		72		302		1,034		2,225
Total revenue	2,401		909		274		466		1,228		5,278
Noninterest expense	1,843		404		190		362		983		3,782
(Reversal of) provision for credit losses	30		98		—		—		27		155
Income (loss) before income taxes and including noncontrolling interests	528		407		84		104		218		1,341
Income tax expense (benefit) (1)	152		91		39		41		96		419
Net income (loss) including noncontrolling interest	376		316		45		63		122		922
Deduct: net loss from noncontrolling interests	—		—		—		—		68		68
Net income (loss) attributable to MUAH	$	376	$	316	$	45	$	63	$	190	$	990
Total assets, end of period	$	63,169	$	23,805	$	1,205	$	29,252	$	30,713	$	148,144

(1) Income tax expense (benefit) includes certain management accounting classification adjustments.