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Balance Sheet Components (Trade Accounts Payable) (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Accounts Payable, Current [Abstract]    
Trade accounts payable $ 801.3 $ 1,061.9
Other payables 455.4 466.2
Accounts payable $ 1,256.7 $ 1,528.1