CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales:
Total net sales	$ 1,906.9	$ 1,865.1	$ 5,749.4	$ 5,532.4
Cost of sales:
Total cost of sales	(1,304.6)	(1,298.9)	(4,032.8)	(3,900.8)
Gross profit	602.3	566.2	1,716.6	1,631.6
Operating expenses:
Selling, general and administrative expenses	(269.0)	(252.7)	(766.5)	(712.9)
Engineering expenses	(43.8)	(36.5)	(123.5)	(123.7)
Amortization expense	(72.5)	(70.3)	(214.7)	(211.6)
Total operating expenses	(385.3)	(359.5)	(1,104.7)	(1,048.2)
Income from operations	217.0	206.7	611.9	583.4
Other income and expenses:
Interest expense, net	(42.2)	(45.6)	(134.7)	(150.3)
Other income, net	0.5	14.3	25.0	5.8
Income before income taxes	175.3	175.4	502.2	438.9
Income tax expense	(43.5)	(46.9)	(130.5)	(113.4)
Net income	131.8	128.5	371.7	325.5
Less: Net (income) loss attributable to noncontrolling interest	(1.2)	(0.4)	(3.9)	1.0
Net income attributable to Wabtec shareholders	$ 130.6	$ 128.1	$ 367.8	$ 326.5
Basic
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.69	$ 0.67	$ 1.95	$ 1.71
Diluted
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.69	$ 0.67	$ 1.95	$ 1.71
Weighted average shares outstanding
Basic (in shares)	187.6	189.8	188.2	190.1
Diluted (in shares)	188.0	190.2	188.6	190.6
Goods
Net sales:
Total net sales	$ 1,489.1	$ 1,543.6	$ 4,562.2	$ 4,540.5
Cost of sales:
Total cost of sales	(1,075.5)	(1,109.9)	(3,368.2)	(3,327.1)
Services
Net sales:
Total net sales	417.8	321.5	1,187.2	991.9
Cost of sales:
Total cost of sales	$ (229.1)	$ (189.0)	$ (664.6)	$ (573.7)