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Business And Summary Of Significant Accounting Policies (Narrative) (Details)
$ in Millions
12 Months Ended
Jun. 28, 2019
Dec. 31, 2019
USD ($)
Business
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Jan. 01, 2020
USD ($)
Nov. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Jan. 31, 2019
USD ($)
Jan. 01, 2019
USD ($)
Jan. 01, 2018
USD ($)
Number of segments | Business   3                
Charges associated with doubtful accounts   $ 30.0 $ 31.0 $ 27.0            
Net aggregate financing receivables   244.0 217.0              
Payments for purchases of investments   241.0 145.9 $ 0.0            
Payments to purchase investments, investments in partnership   189.0 $ 86.0              
Operating lease ROU assets   763.7                
Operating lease liabilities   796.9                
Foreign currency contracts | Net investment hedging                    
Derivative, original notional amount   1,875.0           $ 1,900.0    
Foreign currency contracts | Cash flow hedging                    
Derivative, original notional amount   4,000.0       $ 4,000.0        
Interest rate swaps | Cash flow hedging                    
Derivative, original notional amount   $ 850.0         $ 850.0      
ASU No. 2014-09                    
Effect of change in accounting principle on retained earnings                   $ 3.0
ASU No. 2016-02                    
Operating lease ROU assets                 $ 806.0  
Operating lease liabilities                 $ 838.0  
ASU No. 2016-13 | Subsequent event                    
Effect of change in accounting principle on retained earnings         $ 8.0          
Minimum | Interest rate swaps | Cash flow hedging                    
Derivative, term of contract 10 years                  
Maximum | Interest rate swaps | Cash flow hedging                    
Derivative, term of contract 30 years