The following tables provide details of revenue by major products/service offerings and by geography.

* Recast to conform to current period presentation. Refer to note 4, “Segments,” for additional information.

** Contains lease and loan/working capital financing arrangements which are not subject to the guidance on revenue from contracts with customers.

Revenue by Geography


(Dollars in millions)
For the three months ended March 31:	2020		2019
Americas	$	8,166	$	8,493
Europe/Middle East/Africa		5,517		5,727
Asia Pacific		3,888		3,961
Total	$	17,571	$	18,182

Remaining Performance Obligations

The remaining performance obligations (RPO) disclosure provides the aggregate amount of the transaction price yet to be recognized as of the end of the reporting period and an explanation as to when the company expects to recognize these amounts in revenue. It is intended to be a statement of overall work under contract that has not yet been performed and does not include contracts in which the customer is not committed, such as certain as-a-Service, governmental, term software license and services offerings. The customer is not considered committed when they are able to terminate for convenience without payment of a substantive penalty. The disclosure includes estimates of variable consideration, except when the variable consideration is a sales-based or usage-based royalty promised in exchange for a license of intellectual property. Additionally, as a practical expedient, the company does not include contracts that have an original duration of one year or less. RPO estimates are subject to change and are affected by several factors, including

terminations, changes in the scope of contracts, periodic revalidations, adjustments for revenue that has not materialized and adjustments for currency.

At March 31, 2020, the aggregate amount of the transaction price allocated to RPO related to customer contracts that are unsatisfied or partially unsatisfied was $118 billion. Approximately 60 percent of the amount was expected to be recognized as revenue in the subsequent two years, approximately 35 percent in the subsequent three to five years and the balance (mostly Infrastructure & Cloud Services) thereafter.

Revenue Recognized for Performance Obligations Satisfied (or Partially Satisfied) in Prior Periods

For the three months ending March 31, 2020, revenue was reduced by $14 million for performance obligations satisfied (or partially satisfied) in previous periods mainly due to changes in estimates on contracts with cost-to-cost measures of progress.

Reconciliation of Contract Balances

The following table provides information about notes and accounts receivables — trade, contract assets and deferred income balances:


	At March 31,		At December 31,
(Dollars in millions)	2020		2019
Notes and accounts receivable — trade (net of allowances of $337 and $299 at March 31, 2020 and December 31, 2019, respectively)	$	6,927	$	7,870
Contract assets (1)		488		492
Deferred income (current)		13,377		12,026
Deferred income (noncurrent)		3,769		3,851

(1)	Included within prepaid expenses and other current assets in the Consolidated Balance Sheet.

The amount of revenue recognized during the three months ended March 31, 2020 that was included within the deferred income balance at December 31, 2019 was $4.2 billion and was primarily related to services and software.