Quarterly report pursuant to Section 13 or 15(d)

DEBT - Additional Information (Details)

v3.7.0.1
DEBT - Additional Information (Details)
6 Months Ended
Jun. 30, 2017
USD ($)
extension
Debt Instrument [Line Items]  
Credit facility borrowing capacity $ 900,000,000.0
Line of credit facility, potential maximum borrowing capacity 1,200,000,000.0
Line of credit facility, available for borrowing 383,300,000
Commercial paper notes 900,000,000.0
Commercial paper, notes outstanding $ 516,200,000
Maximum  
Debt Instrument [Line Items]  
Debt instrument, term 1 year
Commercial paper, maturity period range 397 days
Revolving Credit Facility  
Debt Instrument [Line Items]  
Debt instrument, term 5 years
Line of credit facility, expiration date Nov. 30, 2020
Line of credit facility, expiration date, maximum number of extensions | extension 2
Line of credit facility, expiration date, extension period 1 year
Outstanding borrowings $ 0
Term Loan  
Debt Instrument [Line Items]  
Line of credit facility, expiration date Nov. 30, 2018
Letter of Credit  
Debt Instrument [Line Items]  
Letters of credit outstanding, amount $ 500,000