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Other Operating and Non-Operating Income (Tables)
 6 Months Ended
Jun. 30, 2021
Nonoperating Income (Expense) [Abstract]  
Schedule of Other Operating Cost and Expense, by Component [Table Text Block]
 Three Months Ended June 30,Six Months Ended June 30,
2021202020212020
Reorganization charges$— $(2)$— $(4)
Canadian wage subsidies— 4 — 4 
Product-line discontinuance charges— (10)— (10)
Insurance recoveries2 — 2 — 
Other 1 2 1 2 
Other operating credits and charges, net3 (6)3 (8)
Schedule of Other Nonoperating Income (Expense) OTHER OPERATING AND NON-OPERATING ITEMS
Other operating credits and charges, net

Other operating credits and charges, net is comprised of the following components:
 Three Months Ended June 30,Six Months Ended June 30,
2021202020212020
Reorganization charges$— $(2)$— $(4)
Canadian wage subsidies— 4 — 4 
Product-line discontinuance charges— (10)— (10)
Insurance recoveries2 — 2 — 
Other 1 2 1 2 
Other operating credits and charges, net3 (6)3 (8)

Other non-operating items

Other non-operating items is comprised of the following components:

 Three Months Ended June 30,Six Months Ended June 30,
2021202020212020
Interest expense$(3)$(6)$(8)$(11)
Amortization of debt charges— — (1)(1)
Interest expense(4)(6)(9)(12)
Interest income— 1 1 1 
Gain on sale of auction rate securities— 3 — 3 
SERP market adjustments— — — (1)
Investment income— 4 1 3 
Net periodic pension cost, excluding service cost— — — (1)
Loss on early debt extinguishment— — (11)— 
Foreign currency gain (loss)(6)(1)(5)5 
Other non-operating items$(6)$(1)$(16)$4