Acquisition of Orbital ATK Schedule of Finite-Lived Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Acquired Finite-Lived Intangible Assets [Line Items]

Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

The following table presents a summary of purchased intangible assets and their related estimated useful lives:

	Fair Value (in millions)		Estimated Useful Life in Years
Customer contracts	$	1,245	9
Commercial customer relationships	280		13
Total customer-related intangible assets	$	1,525