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Accumulated Other Comprehensive Earnings (Loss) (Balance sheets and Statements of equity) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 4,148.3	$ 6,393.0	$ 14,732.0
Other comprehensive earnings (loss)	482.1	(1,024.0)	1,944.8
Impact of the Split-off Transaction			85.3
Ending balance	13,198.6	4,148.3	6,393.0
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	719.3	1,726.6	(272.6)
Other comprehensive earnings (loss)	490.3	(1,007.3)	1,942.8
Impact of the Split-off Transaction			56.4
Ending balance	1,209.6	719.3	1,726.6
Pension- related adjustments and other
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(87.5)	(70.6)	(99.8)
Other comprehensive earnings (loss)	(9.4)	(16.9)	0.3
Impact of the Split-off Transaction			28.9
Ending balance	(96.9)	(87.5)	(70.6)
Accumulated other comprehensive earnings (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	631.8	1,656.0	(372.4)
Other comprehensive earnings (loss)	480.9	(1,024.2)	1,943.1
Impact of the Split-off Transaction			85.3
Ending balance	1,112.7	631.8	1,656.0
Noncontrolling interests
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(4.0)	(4.2)	(5.9)
Other comprehensive earnings (loss)	1.2	0.2	1.7
Impact of the Split-off Transaction			0.0
Ending balance	(2.8)	(4.0)	(4.2)
Total accumulated other comprehensive earnings (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	627.8	1,651.8	(378.3)
Ending balance	$ 1,109.9	$ 627.8	$ 1,651.8

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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