Segment Information (Reconciliation of Segment Income) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	$ 1,077	$ 1,021	$ 927
Provision for asbestos	(3)	(21)	(26)
Restructuring and other	(48)	(44)	(66)
Loss from early extinguishments of debt	7	(37)	9
Interest expense	(252)	(243)	(270)
Interest income	15	12	11
Foreign exchange	(4)	16	(20)
Income before income taxes	829	769	639
Intercompany profit related to non-reportable segments	8	13	2
Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	1,199	1,164	1,132
Non-reportable segments \| Non-reportable segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Segment income	68	70	83
Corporate and unallocated items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Corporate and unallocated items	$ 139	$ (148)	$ 196

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The provision for changes during the period in estimates of potential future settlements of asbestos litigation and related costs.

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The aggregate amount provided for estimated restructuring charges, gain or loss on asset sales, impairment charges and other separately identified items such as transaction costs

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The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

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