| **Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions** | 3 Months Ended |
|----------------------------------------------------------------------------------------|----------------|
||
| **Statement of Cash Flows [Abstract]**                                                 |           |   |
| Net income                                                                             | $ 161          | $ 160 |
| **Adjustments to reconcile net income to net cash provided by operating activities:**  |           |   |
| Depreciation and amortization                                                          | 40             | 53 |
| Amortization of intangible assets from Exelis Inc. acquisition                         | 25             | 33 |
| Share-based compensation                                                               | 11             | 11 |
| Qualified pension plan contributions                                                   | 0              | (64) |
| Pension income                                                                         | (34)           | (24) |
| **(Increase) decrease in:**                                                            |           |   |
| Accounts receivable                                                                    | (83)           | (39) |
| Inventories                                                                            | (56)           | 2 |
| **Increase (decrease) in:**                                                            |           |   |
| Accounts payable                                                                       | (88)           | (90) |
| Advance payments and unearned income                                                   | 12             | (31) |
| Income taxes                                                                           | 126            | 63 |
| Other                                                                                  | (19)           | (31) |
| Net cash provided by operating activities                                              | 95             | 43 |
| **Investing Activities**                                                               |           |   |
| Net additions of property, plant and equipment                                         | (23)           | (21) |
| Adjustment to proceeds from sale of business                                           | 0              | (25) |
| Net cash used in investing activities                                                  | (23)           | (46) |
| **Financing Activities**                                                               |           |   |
| Proceeds from borrowings                                                               | 0              | 8 |
| Repayments of borrowings                                                               | (35)           | (38) |
| Proceeds from exercises of employee stock options                                      | 14             | 15 |
| Repurchases of common stock                                                            | (75)           | (100) |
| Cash dividends                                                                         | (69)           | (68) |
| Other financing activities                                                             | (9)            | (18) |
| Net cash used in financing activities                                                  | (174)          | (201) |
| Effect of exchange rate changes on cash and cash equivalents                           | 6              | 1 |
| Net decrease in cash and cash equivalents                                              | (96)           | (203) |
| Cash and cash equivalents, beginning of year                                           | 484            | 487 |
| Cash and cash equivalents, end of quarter                                              | $ 388          | $ 284 |

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Adjustments to Proceeds From Sale of Business
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Cash inflow from proceeds of total borrowings.
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| - Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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| - Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.
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| - Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.
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| - Definition
Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies.
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The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.
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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.
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The increase (decrease) during the reporting period in the amount of prepayments by customers for goods or services to be provided at a later date.
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The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets.
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The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.
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Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.
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| - Definition
Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.
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| - Definition
Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.
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| - Definition
Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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| - Definition
The cash outflow to reacquire common stock during the period.
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| - Definition
Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.
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| - Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
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Amount of payment for pension benefits. Excludes other postretirement benefits.
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Amount of noncash expense (reversal of expense) for pension benefits. Excludes other postretirement benefits.
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| - Definition
Amount of cash inflow (outflow) from financing activities classified as other.
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| - Definition
Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.
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| - Definition
The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.
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| - Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.
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| - References
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