XML 94 R52.htm IDEA: XBRL DOCUMENT v3.19.3
Debt - Narrative (Details)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 31, 2019
USD ($)
Sep. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
extension
Sep. 30, 2019
USD ($)
Sep. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2013
Debt Instrument [Line Items]                  
Balance availability under Credit Facilities   $ 1,710,600,000       $ 1,710,600,000   $ 1,694,100,000  
Line of credit facility amount outstanding   170,000,000.0       170,000,000.0   159,000,000.0  
Letters of credit utilizing availability under Credit Facilities   352,000,000.0       $ 352,000,000.0   379,600,000  
Percentage of tax exempt financings           100.00%      
Present value of lease liabilities   112,400,000       $ 112,400,000      
Finance leases               109,500,000  
Gains (losses) on the change in fair value of the hedged senior notes   (1,100,000)   $ 1,900,000   (10,000,000.0) $ 11,100,000    
Gains (losses) on the related interest rate swaps   1,400,000   (2,000,000.0)   10,500,000 (11,500,000)    
Interest rate swaps - other assets   4,900,000       4,900,000   0  
Unrealized (losses) gains   (11,900,000)       (43,000,000.0)      
Fair Value, Measurements, Recurring                  
Debt Instrument [Line Items]                  
Interest rate swaps   30,700,000       30,700,000      
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2                  
Debt Instrument [Line Items]                  
Interest rate swaps   30,700,000       30,700,000      
Interest Rate Swap Locks                  
Debt Instrument [Line Items]                  
Terminated derivative, notional amount               600,000,000.0  
Net periodic earnings $ 0                
Proceeds from issuance and retirement of hedging relationships               31,100,000  
Amounts recognized in other income, net for ineffectiveness               0  
Derivative, notional amount   575,000,000.0       575,000,000.0   725,000,000.0  
Unrealized (losses) gains   (11,900,000)       (43,000,000.0)      
Gains (loss) recognized in other comprehensive income, net of tax       $ 4,200,000     $ 33,100,000    
Expected amortization of yield adjustment on senior notes           1,900,000      
Interest Rate Swap Locks | Fair Value, Measurements, Recurring                  
Debt Instrument [Line Items]                  
Derivatives interest rate locks   1,300,000       1,300,000      
Interest rate swaps - other assets               10,300,000  
Interest Rate Swap Locks | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2                  
Debt Instrument [Line Items]                  
Derivatives interest rate locks   1,300,000       1,300,000      
Interest rate swaps   30,700,000       30,700,000      
Interest rate swaps - other assets               10,300,000  
Interest Rate Swap                  
Debt Instrument [Line Items]                  
Derivative, notional amount   300,000,000.0       300,000,000.0   300,000,000.0  
Interest rate swaps at fair value   13,100,000       13,100,000   2,500,000  
Interest Rate Swap | Fair Value, Measurements, Recurring                  
Debt Instrument [Line Items]                  
Interest rate swaps - other assets   13,100,000       13,100,000   2,500,000  
Interest Rate Swap | Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2                  
Debt Instrument [Line Items]                  
Interest rate swaps - other assets   13,100,000       13,100,000   2,500,000  
Line of Credit Due May 2021                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 1,000,000,000.0        
Line of Credit Due June 2019                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         1,250,000,000        
Uncommitted Revolver                  
Debt Instrument [Line Items]                  
Long-term debt   12,200,000       12,200,000   33,400,000  
Senior Notes $900.0 million 2.5% due August 2024                  
Debt Instrument [Line Items]                  
Long-term debt   $ 892,000,000.0       $ 892,000,000.0   0  
Principal face amount of debt $ 900,000,000.0                
Interest rate 2.50% 2.50%       2.50%      
Senior Notes $650.0 Million 5.500% Due September 2019                  
Debt Instrument [Line Items]                  
Long-term debt   $ 0       $ 0   649,100,000  
Interest rate 5.50% 5.50%       5.50%      
Extinguishment of debt, amount $ 650,000,000.0                
Senior notes: May 2028                  
Debt Instrument [Line Items]                  
Long-term debt   $ 783,900,000       $ 783,900,000   782,700,000  
Principal face amount of debt               $ 800,000,000.0  
Interest rate   3.95%       3.95%   3.95%  
Senior Notes $700 Million 3.800% Due May 2018                  
Debt Instrument [Line Items]                  
Interest rate               3.80%  
Extinguishment of debt, amount               $ 700,000,000.0  
Tax Exempt Bonds and Other Tax Exempt Financings                  
Debt Instrument [Line Items]                  
Long-term debt   $ 1,066,300,000       $ 1,066,300,000   1,036,800,000  
Principal face amount of debt     $ 30,000,000.0            
Extinguishment of debt, amount     $ 35,000,000.0            
Senior Notes $550.0 million 4.750% Due May 2023                  
Debt Instrument [Line Items]                  
Long-term debt   $ 554,900,000       $ 554,900,000   544,500,000  
Interest rate   4.75%       4.75%     4.75%
Senior Notes $500.0 million 3.20% Due March 2025                  
Debt Instrument [Line Items]                  
Long-term debt   $ 496,300,000       $ 496,300,000   495,700,000  
Interest rate   3.20%       3.20%      
Senior Notes $500.0 million 3.20% Due March 2025 | Interest Rate Swap Locks                  
Debt Instrument [Line Items]                  
Accumulated and other comprehensive income (loss), net of tax   $ (3,500,000)       $ (3,500,000)   $ 11,200,000  
Line of Credit | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity         $ 2,250,000,000        
Number of available extensions | extension         2        
Extension period         1 year        
Facility feature, increase limit         $ 1,000,000,000.0        
Minimum | Interest Rate Swap Locks                  
Debt Instrument [Line Items]                  
Derivative, interest rate cap   1.33%       1.33%   1.90%  
Minimum | Tax Exempt Bonds and Other Tax Exempt Financings                  
Debt Instrument [Line Items]                  
Interest rate   1.30%       1.30%      
Maximum | Interest Rate Swap Locks                  
Debt Instrument [Line Items]                  
Derivative, interest rate cap   3.00%       3.00%   3.25%  
Maximum | Tax Exempt Bonds and Other Tax Exempt Financings                  
Debt Instrument [Line Items]                  
Interest rate   1.875%       1.875%