Balance Sheet Components (Trade Accounts Payable) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Accounts Payable, Current [Abstract]
Accounts Payable, Trade	$ 939.5	$ 717.5
Accounts Payable, Other	408.6	392.1
Accounts Payable, Trade, Current	$ 1,348.1	$ 1,109.6