Schedule II, Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II, Valuation and Qualifying Accounts

SCHEDULE II

NSP-Minnesota and Subsidiaries Valuation and Qualifying Accounts Years Ended Dec. 31

	Allowance for bad debts
(Millions of Dollars)	2021		2020		2019
Balance at Jan. 1	$	33	$	23	$	24
Additions charged to costs and expenses	24		24		13
Additions charged to other accounts (a)	5		5		7
Deductions from reserves (b)	(17)		(19)		(21)
Balance at Dec. 31	$	45	$	33	$	23

(a)Recovery of amounts previously written-off.

(b)Deductions related primarily to bad debt write-offs.