Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 6,193.7	$ 8,318.4	$ 3,232.0
Other comprehensive income (loss) from continuing operations:
Change in foreign currency translation gains (losses)	122.1	(89.9)	(429.6)
Change in net unrealized gains (losses) on securities	14.2	34.4	(8.8)
Change in defined benefit pension and retiree health benefit plans (Note 15)	(157.1)	(970.0)	544.0
Change in effective portion of cash flow hedges	(152.9)	34.3
Change in effective portion of cash flow hedges			(6.0)
Other comprehensive income (loss) from continuing operations before income taxes	(173.7)	(991.2)	99.6
Benefit (provision) for income taxes related to other comprehensive income (loss) from continuing operations	200.9	151.0	(30.3)
Net other comprehensive income (loss)	27.2	(783.4)	83.6
Comprehensive income	6,220.9	7,535.0	3,315.6
Continuing Operations
Other comprehensive income (loss) from continuing operations:
Net other comprehensive income (loss)	27.2	(840.2)	69.3
Discontinued Operations
Other comprehensive income (loss) from continuing operations:
Net other comprehensive income (loss)	$ 0.0	$ 56.8	$ 14.3