CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net sales:
Total net sales	$ 2,012.3	$ 1,737.4	$ 3,842.5	$ 3,667.3
Cost of sales:
Total cost of sales	(1,432.2)	(1,250.7)	(2,728.2)	(2,601.9)
Gross profit	580.1	486.7	1,114.3	1,065.4
Operating expenses:
Selling, general and administrative expenses	(262.1)	(216.8)	(497.5)	(460.2)
Engineering expenses	(42.0)	(38.2)	(79.7)	(87.2)
Amortization expense	(72.7)	(72.3)	(142.2)	(141.3)
Total operating expenses	(376.8)	(327.3)	(719.4)	(688.7)
Income from operations	203.3	159.4	394.9	376.7
Other income and expenses:
Interest expense, net	(44.9)	(51.4)	(92.5)	(104.7)
Other income (expense), net	10.3	6.3	24.5	(8.5)
Income before income taxes	168.7	114.3	326.9	263.5
Income tax expense	(43.5)	(28.5)	(87.0)	(66.5)
Net income	125.2	85.8	239.9	197.0
Less: Net (income) loss attributable to noncontrolling interest	(0.4)	1.0	(2.7)	1.4
Net income attributable to Wabtec shareholders	$ 124.8	$ 86.8	$ 237.2	$ 198.4
Basic
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.66	$ 0.46	$ 1.25	$ 1.04
Diluted
Net income attributable to Wabtec shareholders (in dollars per share)	$ 0.66	$ 0.46	$ 1.25	$ 1.04
Weighted average shares outstanding
Basic (in shares)	188.6	189.8	188.5	190.3
Diluted (in shares)	188.9	190.2	188.9	190.8
Goods
Net sales:
Total net sales	$ 1,588.0	$ 1,406.1	$ 3,073.1	$ 2,996.9
Cost of sales:
Total cost of sales	(1,185.0)	(1,061.3)	(2,292.7)	(2,217.2)
Services
Net sales:
Total net sales	424.3	331.3	769.4	670.4
Cost of sales:
Total cost of sales	$ (247.2)	$ (189.4)	$ (435.5)	$ (384.7)