Revenue, Remaining Performance Obligation, Amount

  


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|  |  | Year Ended December 31 |  |
| ($ in millions) |  | 2021 |  | 2020 |  | 2019 |  |  |
| Major Programs |  |  |  |  |  |  |  |  |
| Amphibious assault ships |  | $ | 1,328  |  |  | $ | 1,403  |  |  | $ | 1,336  |  |  |  |
| Surface combatants and coast guard cutters |  | 1,179  |  |  | 1,267  |  |  | 1,209  |  |  |  |
| Other |  | 21  |  |  | 8  |  |  | 10  |  |  |  |
| Total Ingalls |  | 2,528  |  |  | 2,678  |  |  | 2,555  |  |  |  |
| Aircraft carriers |  | 3,073  |  |  | 3,056  |  |  | 2,878  |  |  |  |
| Submarines |  | 1,917  |  |  | 1,727  |  |  | 1,595  |  |  |  |
| Other |  | 673  |  |  | 788  |  |  | 758  |  |  |  |
| Total Newport News |  | 5,663  |  |  | 5,571  |  |  | 5,231  |  |  |  |
| Government and energy services |  | 1,462  |  |  | 1,033  |  |  | 996  |  |  |  |
| Oil and gas services |  | 14  |  |  | 235  |  |  | 241  |  |  |  |
| Total Technical Solutions |  | 1,476  |  |  | 1,268  |  |  | 1,237  |  |  |  |
| Intersegment eliminations |  | (143) |  |  | (156) |  |  | (124) |  |  |  |
| Sales and service revenues |  | $ | 9,524  |  |  | $ | 9,361  |  |  | $ | 8,899  |  |  |  |

  
As of December 31, 2021, the Company had $48.5 billion of remaining performance obligations. The Company expects to recognize approximately 19% of its remaining performance obligations as revenue through 2022, an additional 35% through 2024, and the balance thereafter.Cumulative Catch-up Adjustments  
For the year ended December 31, 2021, net cumulative catch-up adjustments increased operating income by $115 million and increased diluted earnings per share by $2.26. For the year ended December 31, 2020, net cumulative catch-up adjustments decreased operating income by $29 million and decreased diluted earnings per share by $0.56. For the year ended December 31, 2019, net cumulative catch-up adjustments increased operating income by $96 million and increased diluted earnings per share by $1.84.  
No individual adjustment was material to the Company's consolidated statements of operations and comprehensive income for the year ended December 31, 2021.  
Cumulative catch-up adjustments for the year ended December 31, 2020, included unfavorable adjustments of $148 million, relating to Block IV of the Virginia class (SSN 774) submarine program at the Company's Newport News segment, which decreased diluted earnings per share by $2.88. While other unfavorable cumulative catch-up adjustments for the year ended December 31, 2020, were not individually material, cost estimates for discrete delay and disruption from COVID-19 Events drove $61 million of unfavorable cumulative catch-up adjustments across our contracts, including $16 million relating to Block IV of the Virginia class (SSN 774) submarine program, which is included in the $148 million unfavorable adjustments discussed above. For the year ended December 31, 2020, no individual favorable cumulative catch-up adjustment was material to the Company's consolidated statements of operations and comprehensive income.  
No individual adjustment was material to the Company's consolidated statements of operations and comprehensive income for the year ended December 31, 2019.  
Contract Balances  
Contract balances include accounts receivable, contract assets, and contract liabilities from contracts with customers. Accounts receivable represent an unconditional right to consideration and include amounts billed and currently due from customers. Contract assets primarily relate to the Company's rights to consideration for work completed but not billed as of the reporting date when the right to payment is not just subject to the passage of time. Fixed-price contracts are generally billed to the customer using either progress payments, whereby amounts are billed monthly as costs are incurred or work is completed, or performance-based payments, which are based upon 81
