I mean they didn't just decide not to pay taxes. They followed the tax law. They accelerated some depreciation to take it now at the expense of a higher tax bill later. They took advantage of some government credits.
Corporate taxation is only one point of taxation. They pay payroll taxes, they pay sales tax on equipment they purchase at their factories, their employees pay taxes when they get paid.
Low corporate tax rates are unpopular because the optics are bad, but it doesn't actually mean that money is flowing through the company and into their employees without taxation anywhere. As soon as they do nearly anything with that money other than buy more parts to sell, taxes are being paid.