Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Service related, net	$ 1,865	$ 1,067	$ 379
Net gain on mortgage loans held for sale	599	2,251	2,310
Total revenues	2,464	3,318	2,689
Expenses:
Salaries, wages and benefits	789	1,036	1,027
General and administrative	485	626	755
Total expenses	1,274	1,662	1,782
Interest income	261	231	158
Interest expense	(424)	(478)	(528)
Other income (expense), net	187	528	(135)
Total other income (expenses), net	24	281	(505)
Income from continuing operations before income tax expense	1,214	1,937	402
Less: Income tax expense	291	471	93
Net income from continuing operations	923	1,466	309
Net loss from discontinued operations	0	(12)	(2)
Net income	923	1,454	307
Less: Net income attributable to non-controlling interests	0	0	2
Net income attributable to Mr. Cooper	923	1,454	305
Less: Undistributed earnings attributable to participating stockholders	0	8	3
Less: Premium on retirement of preferred stock	0	28	0
Net income attributable to common stockholders	$ 923	$ 1,418	$ 302
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations, Per Basic Share	$ 12.84	$ 17.39	$ 3.33
Income (Loss) from Continuing Operations, Per Diluted Share	12.50	16.67	3.22
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0	(0.15)	(0.02)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0	(0.14)	(0.02)
Earnings Per Share, Basic	12.84	17.24	3.31
Earnings Per Share, Diluted	$ 12.50	$ 16.53	$ 3.20