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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 3 Months Ended
Mar. 31, 2024
Accounting Policies [Abstract]  
Reconciliation of Weighted-Average Outstanding Shares used in Calculations of Basic and Diluted EPS A reconciliation of the weighted-average outstanding shares used in the two calculations is as follows: 
 Three Months Ended March 31,
 20242023
 (In millions)
Weighted-average shares outstanding (basic)123.5 122.6 
Effect of dilutive securities: 
Stock options and restricted stock units1.3 0.9 
Weighted-average shares outstanding (diluted)124.8 123.5 
Rollforward of Allowance for Doubtful Accounts Below is a rollforward of our allowance for doubtful accounts for the three months ended March 31, 2024 and 2023, respectively.
Three Months Ended March 31,
20242023
(In millions)
Allowance for doubtful accounts, beginning of period$16.7 $19.1 
Current period bad debt expense4.7 3.6 
Write-offs, net of recoveries(5.0)(2.6)
Allowance for doubtful accounts, end of period$16.4 $20.1 
Summary of Noncontrolling Interests Activities
The Company's redeemable noncontrolling interests activities for the three months ended March 31, 2024 are summarized as follows:

Three Months Ended March 31,
Redeemable noncontrolling interests:
2024
(In millions)
Redeemable noncontrolling interests, beginning of period$135.1 
Effect of foreign currency translation attributable to redeemable noncontrolling interest(3.5)
Redeemable noncontrolling interests, end of period$131.6