Quarterly report pursuant to Section 13 or 15(d)

Debt and Borrowing Arrangements (Details)

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Debt and Borrowing Arrangements (Details)
€ in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2017
EUR (€)
Long-term debt      
Issuance of long term debt   $ 1,000.0 € 2,500
Carrying Value of Long-Term Debt $ 3,842.0 3,842.0  
Amount of debt retired or extinguished   360.0  
Gain (Loss) on Extinguishment of Debt $ (38.0) (38.0)  
Notes due on May 25, 2022 [Member]      
Long-term debt      
Issuance of long term debt   $ 500.0  
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 2.20% 2.20%  
Notes due on May 25, 2027 [Member]      
Long-term debt      
Issuance of long term debt   $ 500.0  
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 2.90% 2.90%  
Notes due on March 8, 2019      
Long-term debt      
Issuance of long term debt | €     1,500
Debt Instrument, Basis Spread on Variable Rate 0.25%    
Notes due on March 9, 2021      
Long-term debt      
Issuance of long term debt | €     500
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 0.00% 0.00%  
Notes due on March 8, 2024 [Member]      
Long-term debt      
Issuance of long term debt | €     € 500
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 0.50% 0.50%  
Total principal notes due March 9, 2017 [Domain]      
Long-term debt      
Debt Instrument, Basis Spread on Variable Rate   0.15% 0.15%
Amount of debt retired or extinguished | €     € 2,000
Notes due August 15, 2019      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 4.50% 4.50%  
Amount of debt retired or extinguished   $ 95.6  
Notes due September 15, 2022 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 8.00% 8.00%  
Amount of debt retired or extinguished   $ 11.7  
Notes due September 15, 2023 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 6.75% 6.75%  
Amount of debt retired or extinguished   $ 36.5  
Notes due October 1, 2026 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 7.00% 7.00%  
Amount of debt retired or extinguished   $ 9.9  
Notes due November 15, 2026 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 6.95% 6.95%  
Amount of debt retired or extinguished   $ 53.8  
Notes due September 15, 2028 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 6.75% 6.75%  
Amount of debt retired or extinguished   $ 41.3  
Notes due October 15, 2036 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 6.70% 6.70%  
Amount of debt retired or extinguished   $ 32.0  
Notes due March 18, 2037 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 5.71% 5.71%  
Amount of debt retired or extinguished   $ 3.4  
Notes due January 15, 2038 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 6.75% 6.75%  
Amount of debt retired or extinguished   $ 24.3  
Notes due May 11, 2098 [Member]      
Long-term debt      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 7.00% 7.00%  
Amount of debt retired or extinguished   $ 4.7