Supplemental Cash Flow Data (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in Operating Capital [Abstract]
(Increase) decrease in accounts receivable	$ (156.6)	$ 88.3	$ (341.6)
(Increase) decrease in work in process and other current assets	(99.8)	(269.3)	5.4
Increase (decrease) in accounts payable	276.3	242.9	763.2
Increase (decrease) in customer advances, taxes payable and other current liabilities	87.2	54.3	4.8
Change in other assets and liabilities, net	18.0	(35.7)	(83.3)
Increase in operating capital	125.1	80.5	348.5
Income taxes paid	361.0	590.9	566.0
Interest paid	246.3	$ 243.2	$ 226.2
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	1,816.7
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 54.1