Every figure is an estimate — no company discloses payroll by segment. Each public segment is sized from the firm's own SEC headcount, allocated across its segments and priced at industry wages where a screened employee count exists, otherwise from segment revenue × the industry's payroll-to-revenue ratio. Whole economy adds the non-public remainder beside the public companies: each industry's total QCEW private wages minus the (estimated) public payroll, on a US-domestic basis; drill a hatched bar into small business, other private, and nonprofit. Industry ratios are US-based but applied to global segment revenue, and for finance and wholesale/retail the revenue denominator is weak — read those as rough. Hover any bar for its method, sources, and confidence.