Statements of Consolidated Comprehensive Income - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 2,388.8	$ 2,020.1	$ 1,864.4
Other comprehensive income, net of tax:
Foreign currency translation adjustments	[1]	93.9	(108.7)	(30.6)
Pension and other postretirement benefit adjustments:
Amounts recognized in AOCI	[2]	3.9	106.8	48.7
Amounts reclassified from AOCI	[3]	(17.9)	3.7	6.3
Pension and other postretirement benefit adjustments		(14.0)	110.5	55.0
Unrealized net gains on cash flow hedges:
Amounts reclassified from AOCI	[4]	(3.6)	(4.0)	(4.5)
Other comprehensive income (loss), net of tax		76.3	(2.2)	19.9
Comprehensive income		$ 2,465.1	$ 2,017.9	$ 1,884.3

[1] The years ended December 31, 2023, 2022 and 2021 include unrealized (losses) gains, net of taxes, of $(24.9) million, $34.1 million and $37.1 million, respectively, related to net investment hedges. See Note 17.

[2] Net of taxes of $(2.8) million, $(33.8) million and $(12.6) million in 2023, 2022 and 2021, respectively.

[3] Net of taxes of $5.9 million, $(1.2) million and $(2.1) million in 2023, 2022 and 2021, respectively

[4] Net of taxes of $1.2 million, $1.1 million and $1.0 million in 2023, 2022 and 2021, respectively.