Basis Of Presentation Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2020

Net cumulative catch-up adjustments [Abstract]

Use of Estimates

The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We believe that the accounting estimates and assumptions made by management are appropriate given the increased uncertainties surrounding the severity and duration of the impacts of the COVID-19 pandemic, however actual results could differ materially from those estimates.

Changes in estimated revenues, cost of sales and the related effect on operating income are recognized using a cumulative catch-up adjustment which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a long-term contract’s percentage-of-completion. When the

current estimates of total sales and costs for a long-term contract indicate a loss, a provision for the entire reach-forward loss on the long-term contract is recognized.

Net cumulative catch-up adjustments to prior years' revenue and earnings, including certain reach-forward losses, across all long-term contracts were as follows:



(In millions - except per share amounts)	Three months ended March 31
	2020			2019
(Decrease)/increase to Revenue		($434	)		$160
(Decrease)/increase to (Loss)/earnings from operations		($839	)		$147
(Decrease)/increase to Diluted EPS		($0.63	)		$0.24