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Redeemable Noncontrolling Interest (Tables)
3 Months Ended
Mar. 31, 2020
Temporary Equity Disclosure [Abstract]  
Summary of Redeemable Noncontrolling Interest
At March 31, 2020, the redeemable noncontrolling interest was determined as follows:
In millions
Balance at December 31, 2019$304.3  
Net Loss Attributable to Redeemable Noncontrolling Interest(5.3) 
Other Comprehensive Income, Net of Tax8.4  
Redemption of IP's Ownership Interest(250.0) 
Redeemable Noncontrolling Interest Redemption Value Adjustment(18.1) 
Distributions of Membership Interest(1.1) 
Balance at March 31, 2020$38.2