v3.10.0.1
Fair Value Measurements (Assets and Liabilities Reconciliation) (Schedule and Footnote) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets (liabilities) at January 1, 2018 $ 958.9
Gains included in net earnings 186.0
Impact of ASU 2016-01 31.9
Additions 55.2
Dispositions (17.7)
Settlements (7.4)
Transfers out of Level 3 (2.0)
Foreign currency translation adjustments, dividends and other, net (16.2)
Balance of net assets (liabilities) at December 31, 2018 1,149.7
Investments  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets (liabilities) at January 1, 2018 406.6
Gains included in net earnings (39.0)
Impact of ASU 2016-01 31.9
Additions 55.0
Dispositions (17.7)
Settlements 0.0
Transfers out of Level 3 (2.0)
Foreign currency translation adjustments, dividends and other, net (15.9)
Balance of net assets (liabilities) at December 31, 2018 418.9
Cross-currency and interest rate derivative contracts  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets (liabilities) at January 1, 2018 (3.2)
Gains included in net earnings (11.5)
Impact of ASU 2016-01 0.0
Additions 0.2
Dispositions 0.0
Settlements 0.0
Transfers out of Level 3 0.0
Foreign currency translation adjustments, dividends and other, net 0.4
Balance of net assets (liabilities) at December 31, 2018 (14.1)
Equity-related derivative instruments  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance of net assets (liabilities) at January 1, 2018 555.5
Gains included in net earnings 197.5
Impact of ASU 2016-01 0.0
Additions 0.0
Dispositions 0.0
Settlements (7.4)
Transfers out of Level 3 0.0
Foreign currency translation adjustments, dividends and other, net (0.7)
Balance of net assets (liabilities) at December 31, 2018 $ 744.9