Discontinued Operations - Narrative (Details) - A&S Business - Discontinued Operations $ in Millions		12 Months Ended
	Oct. 01, 2018 USD ($) company shares	Dec. 31, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of operating segments | company	4
Consideration	$ 2,700
Exchange offer	$ 1,300
Consideration, number of shares (in shares) | shares	15,824,931
Cash paid to company for direct sales of assets and liabilities	$ 1,000
Debt-for-debt exchange	250
Cash paid to company as a dividend	$ 150
After tax gain on transaction		$ 1,900
Stevens Holding Company, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stockholders right to exchange (in shares) | shares	35,000,000