Business Segments (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Schedule of reportable business segments

(Dollars in millions)	Regional Bank		Global Corporate & Investment Banking - U.S.		Transaction Banking			MUSA		Other (1)			MUFG Americas Holdings Corporation
Results of operations
Net interest income (expense)	$	2,294	$	424	$	259		$	167	$	(51	)	$	3,093
Noninterest income	520		353		56			384		1,392			2,705
Total revenue	2,814		777		315			551		1,341			5,798
Noninterest expense	2,130		458		244			476		2,907			6,215
(Reversal of) provision for credit losses	209		51		(2		)	—		(6		)	252
Income (loss) before income taxes and including noncontrolling interests	475		268		73			75		(1,560		)	(669		)
Income tax expense (benefit) (2)	93		12		25			18		(66		)	82
Net income (loss) including noncontrolling interest	382		256		48			57		(1,494		)	(751		)
Deduct: net loss from noncontrolling interests	—		—		—			—		17			17
Net income (loss) attributable to MUAH	$	382	$	256	$	48		$	57	$	(1,477	)	$	(734	)
Total assets, end of period	$	74,980	$	20,822	$	1,015		$	34,445	$	39,548		$	170,810

(1) Other includes goodwill impairment. See Note 5 to these Consolidated Financial Statements.

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

As of and for the Twelve Months Ended December 31, 2018:

(Dollars in millions)	Regional Bank		Global Corporate & Investment Banking - U.S.		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		Global Corporate & Investment Banking - U.S.			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.