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Financing Arrangements - Narrative (Details)
6 Months Ended
Mar. 01, 2017
USD ($)
Jul. 15, 2016
USD ($)
Jun. 15, 2016
USD ($)
May 17, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
EUR (€)
Jun. 30, 2017
BRL
Jun. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Nov. 02, 2016
EUR (€)
Nov. 02, 2016
USD ($)
May 23, 2016
USD ($)
Dec. 31, 2014
EUR (€)
Dec. 31, 2014
USD ($)
Debt Instrument [Line Items]                              
Repayments of long-term debt         $ 260,000,000 $ 257,000,000                  
Letter of Credit Subfacility Maturing 2017                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity               BRL 1,000,000,000 $ 302,000,000 $ 307,000,000          
Line of Credit | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity                 0 0          
Line of Credit | Foreign Line of Credit                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity             € 250,000,000   285,000,000 263,000,000          
Senior note - 1.35% maturing 2017                              
Debt Instrument [Line Items]                              
Repayments of long-term debt $ 250,000,000                            
Debt instrument, interest rate, stated percentage 1.35%                            
Debentures—7.75%, maturing 2016 | Senior Notes                              
Debt Instrument [Line Items]                              
Repayments of long-term debt   $ 244,000,000                          
Debt instrument, interest rate, stated percentage   7.75%                          
Senior note—6.5%, maturing 2016 | Senior Notes                              
Debt Instrument [Line Items]                              
Repayments of long-term debt     $ 250,000,000                        
Debt instrument, interest rate, stated percentage     6.50%                        
Debt instrument, redemption price, percentage         101.00%                    
Notes Maturing 2046, 4.5 Percent Interest Rate | Senior Notes                              
Debt Instrument [Line Items]                              
Debt instrument, interest rate, stated percentage                         4.50%    
Debt instrument, face amount                         $ 500,000,000    
Notes Maturing 2026, 1.250 Percent Interest Rate | Senior Notes                              
Debt Instrument [Line Items]                              
Debt instrument, interest rate, stated percentage                     1.25% 1.25%      
Debt instrument, redemption price, percentage         101.00%                    
Debt instrument, face amount                     € 500,000,000 $ 555,000,000      
Guaranteed Notes Due on April 26, 2018 | Senior Notes                              
Debt Instrument [Line Items]                              
Debt instrument, face amount                           € 300,000,000 $ 363,000,000
Third Amended and Restated Long-Term Credit Agreement | Line of Credit | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Line of credit facility, maximum borrowing capacity       $ 2,500,000,000.0         $ 2,500,000,000.0 $ 0          
Line of credit facility, commitment fee percentage       0.125%                      
Ratio of indebtedness to net capital       0.60                      
Debt instrument, covenant, rolling twelve month coverage ratio, minimum       3.0                      
London Interbank Offered Rate (LIBOR) | Third Amended and Restated Long-Term Credit Agreement | Line of Credit | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Debt Instrument, basis spread on variable rate       1.125%                      
Prime Rate | Third Amended and Restated Long-Term Credit Agreement | Line of Credit | Revolving Credit Facility                              
Debt Instrument [Line Items]                              
Debt Instrument, basis spread on variable rate       0.125%