This filing has nothing to do with the stock (equity)
retiring debt that has matured
See cap #2
0.250% Notes Due 2022
Confusing as Form 25 used to delist for taking private or it's securities have been exchanged for cash or another security as part of a takeover…etc.
Bottom line it is NOT being delisted
https://d18rn0p25nwr6d.cloudfront.net/CIK-0000078003/04b4e12c-c1e2-42cc-b15d-4b4d47ed9b47.pdf