XML 13 R3.htm IDEA: XBRL DOCUMENT v3.21.1
Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
$ in Millions
Mar. 31, 2021
Dec. 31, 2020
Allowance for doubtful accounts $ 19.3 $ 17.7
Common stock, par value (in dollars per share) $ 1 $ 1
Common stock authorized (in shares) 2,000,000,000 2,000,000,000
Common stock issued (in shares) 544,003,038 544,003,038
Common stock outstanding (in shares) 162,466,592 162,817,526
Treasury stock (in shares) 381,536,446 381,185,512