CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
INTEREST INCOME:
Loans		$ 1,879,262,000	$ 2,035,148,000	$ 3,857,010,000	$ 4,034,486,000
Interest-earning deposits		8,272,000	47,899,000	40,421,000	91,917,000
Investment securities:
AFS		51,631,000	71,137,000	121,654,000	145,567,000
HTM		23,130,000	15,789,000	46,775,000	33,111,000
Other investments		5,494,000	6,117,000	11,904,000	12,051,000
TOTAL INTEREST INCOME		1,967,789,000	2,176,090,000	4,077,764,000	4,317,132,000
INTEREST EXPENSE:
Deposits and other customer accounts		69,122,000	145,145,000	197,735,000	275,433,000
Borrowings and other debt obligations		359,877,000	409,220,000	755,263,000	817,089,000
TOTAL INTEREST EXPENSE		428,999,000	554,365,000	952,998,000	1,092,522,000
NET INTEREST INCOME		1,538,790,000	1,621,725,000	3,124,766,000	3,224,610,000
Credit loss expense		977,373,000	480,632,000	2,162,983,000	1,080,843,000
NET INTEREST INCOME AFTER CREDIT LOSS EXPENSE		561,417,000	1,141,093,000	961,783,000	2,143,767,000
NON-INTEREST INCOME:
Consumer and commercial fees		108,826,000	146,499,000	233,074,000	279,517,000
Lease income		755,006,000	705,835,000	1,526,666,000	1,380,720,000
Miscellaneous income, net	[1],[2]	(100,030,000)	108,271,000	21,943,000	197,815,000
TOTAL FEES AND OTHER INCOME		763,802,000	960,605,000	1,781,683,000	1,858,052,000
Net gain on sale of investment securities		22,516,000	2,379,000	31,795,000	379,000
TOTAL NON-INTEREST INCOME		786,318,000	962,984,000	1,813,478,000	1,858,431,000
GENERAL, ADMINISTRATIVE AND OTHER EXPENSES:
Compensation and benefits		440,521,000	470,247,000	929,794,000	946,810,000
Occupancy and equipment expenses		164,875,000	142,646,000	311,786,000	285,040,000
Technology, outside service, and marketing expense		126,991,000	152,425,000	261,981,000	304,131,000
Loan expense		58,423,000	102,784,000	152,344,000	209,500,000
Lease expense		641,270,000	513,780,000	1,231,631,000	993,084,000
Impairment of goodwill		1,848,228,000	0	1,848,228,000	0
Other expenses		149,382,000	160,504,000	277,727,000	346,236,000
TOTAL GENERAL, ADMINISTRATIVE AND OTHER EXPENSES		3,429,690,000	1,542,386,000	5,013,491,000	3,084,801,000
(LOSS)/INCOME BEFORE INCOME TAX (BENEFIT)/PROVISION		(2,081,955,000)	561,691,000	(2,238,230,000)	917,397,000
Income tax (benefit)/provision		(186,151,000)	155,326,000	(219,512,000)	271,540,000
NET (LOSS)/INCOME INCLUDING NCI		(1,895,804,000)	406,365,000	(2,018,718,000)	645,857,000
LESS: NET (LOSS)/INCOME ATTRIBUTABLE TO NCI		(23,377,000)	110,743,000	(19,614,000)	183,255,000
NET (LOSS)/INCOME ATTRIBUTABLE TO SHUSA		$ (1,872,427,000)	$ 295,622,000	$ (1,999,104,000)	$ 462,602,000

[1] Includes equity investment income/(expense), net.

[2] Netted down by impact of $268.4 million, and $331.3 million for the three-month and six-month periods ended June 30, 2020, respectively, compared to $104.4 million and $172.0 million for the corresponding periods in 2019 of lower of cost or market adjustments on a portion of the Company's LHFS portfolio.