The filed number, then the thesis. Amazon's fiscal-2019 Form 10-K, filed February 3, 2020, reports consolidated operating income of $14.5 billion for the year ended December 31, 2019, across three reportable segments: North America, International, and AWS. Those three segments are how the company tells you to read it.
The structure is the disclosure. North America carries the bulk of retail net sales; International runs thinner and often loss-making as it scales; AWS is the smaller-revenue, far-higher-margin engine. Reporting them separately is what lets an investor see that the headline retail growth and the operating-income generation do not live in the same place.
That separation is the whole comparability discipline here. Blending the three would hide the single most important fact in the filing — that a cloud-infrastructure unit, not the storefront, is where a disproportionate share of operating income is generated. The 10-K keeps them apart so the reader does not have to guess.
What the segment lines do not give you is the inside of each box. North America folds together online stores, third-party seller services, subscriptions and physical stores; the device business sits inside that, not on its own line. The filing reports the segment totals as Amazon defines them; finer splits are estimates, not disclosures.
The forward read this 10-K frames is whether AWS can keep carrying consolidated profitability while the retail segments fund growth. The document states the FY2019 result; it does not forecast the mix from here.
For an operator or investor, the throughline is to read Amazon as a volume business stapled to a margin business, anchored to the fiscal-2019 10-K on sec.gov; segment detail surfaced and verified via EdgarBeast, the SEC filing data API & evidence index.