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Financial Services Borrowings (Detail) - Financial Services - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]    
Effective Rate 1.90% 2.00%
Commercial paper $ 3,797.2 $ 3,256.8
Bank loans 313.0 284.0
Commercial paper and bank loans 4,110.2 3,540.8
Term notes 7,112.5 6,409.7
Commercial Paper, Bank Loans, and Term Debt at Carrying Value, Total $ 11,222.7 $ 9,950.5
Commercial Paper    
Debt Instrument [Line Items]    
Effective Rate 1.50% 1.90%
Bank Loans    
Debt Instrument [Line Items]    
Effective Rate 7.10% 7.20%
Term Loan    
Debt Instrument [Line Items]    
Effective Rate 1.90% 1.80%