v3.10.0.1
Long-lived Assets (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Depreciation expense $ 3,217.1 $ 3,187.4 $ 3,190.2
Property and equipment, net 13,878.9 14,149.0  
Non-cash increases to PP&E related to vendor financing arrangements (2,175.5) (2,336.2) (1,811.2)
Value added tax, vendor financing arrangement 347.3 387.1 247.4
Assets acquired under capital leases (102.4) (106.7) (100.4)
Amortization of intangible assets 641.1 603.2 $ 927.5
Assets Held under Capital Leases      
Property, Plant and Equipment [Line Items]      
Property and equipment, net $ 545.5 $ 559.7