Equity	12 Months Ended
Dec. 31, 2018
Equity [Abstract]
Equity	Equity On May 8, 2017, L3’s Board of Directors approved a share repurchase program that authorizes L3 to repurchase up to an additional $1.5 billion of its common stock. The program became effective on July 1, 2017 and has no set expiration date. Repurchases of L3’s common stock are made from time to time at management’s discretion in accordance with applicable U.S. Federal securities laws. The timing and actual number of shares to be repurchased in the future will depend on a variety of factors, including, but not limited to, the Company’s financial position, earnings, legal requirements, other investment opportunities (including acquisitions) and market conditions. L3 repurchased 1.6 million shares of its common stock at an average price of $196.64 per share for an aggregate amount of $322 million from January 1, 2018 through September 28, 2018. All share repurchases of L3’s common stock have been recorded as treasury shares. The Company did not repurchase any shares of common stock from September 29, 2018 through February 14, 2019. The last repurchase of shares was in July 2018. In connection with the planned merger with Harris Corporation (see Note 1), the Company suspended the share repurchase program. On February 12, 2019, L3’s Board of Directors declared a quarterly cash dividend of $0.85 per share, payable on March 15, 2019 to shareholders of record at the close of business on March 1, 2019. During the year ended December 31, 2018, the Company paid $254 million of cash dividends, offset by a $1 million net reduction of previously accrued dividends for employee-held stock awards.

Equity

On May 8, 2017, L3’s Board of Directors approved a share repurchase program that authorizes L3 to repurchase up to an additional $1.5 billion of its common stock. The program became effective on July 1, 2017 and has no set expiration date. Repurchases of L3’s common stock are made from time to time at management’s discretion in accordance with applicable U.S. Federal securities laws. The timing and actual number of shares to be repurchased in the future will depend on a variety of factors, including, but not limited to, the Company’s financial position, earnings, legal requirements, other investment opportunities (including acquisitions) and market conditions. L3 repurchased 1.6 million shares of its common stock at an average price of $196.64 per share for an aggregate amount of $322 million from January 1, 2018 through September 28, 2018. All share repurchases of L3’s common stock have been recorded as treasury shares.

The Company did not repurchase any shares of common stock from September 29, 2018 through February 14, 2019. The last repurchase of shares was in July 2018. In connection with the planned merger with Harris Corporation (see Note 1), the Company suspended the share repurchase program.

On February 12, 2019, L3’s Board of Directors declared a quarterly cash dividend of $0.85 per share, payable on March 15, 2019 to shareholders of record at the close of business on March 1, 2019. During the year ended December 31, 2018, the Company paid $254 million of cash dividends, offset by a $1 million net reduction of previously accrued dividends for employee-held stock awards.