Acquisitions And Divestitures Acquisition of HellermannTyton Group PLC (Details) € in Millions, $ in Millions			1 Months Ended		3 Months Ended								12 Months Ended
	Dec. 18, 2015 USD ($)	Dec. 18, 2015 GBP (£)	Jul. 31, 2015 USD ($)	Jul. 31, 2015 GBP (£)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Nov. 19, 2015 USD ($)	Jul. 30, 2015 GBP (£)
Business Acquisition [Line Items]
Purchase price, cash consideration, net of cash acquired													$ 324	$ 15	$ 1,654
Net sales					$ 3,440	$ 3,148	$ 3,153	$ 3,143	$ 3,193	$ 3,039	$ 3,084	$ 2,958	12,884	12,274	10,864
Costs associated with acquisitions													8	0	40
Goodwill					$ 1,944				$ 1,502				1,944	1,502	1,531
Loss on extinguishment of debt										$ (73)			0	(73)	(58)
Senior Bridge Credit Agreement
Business Acquisition [Line Items]
Loss on extinguishment of debt															(6)
Senior Bridge Credit Agreement | Barclays Bank | Line of Credit
Business Acquisition [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity | £																		£ 550,000,000
HellermannTyton Group PLC
Business Acquisition [Line Items]
Business Acquisition, Percentage of Equity Interests Acquired	100.00%
Purchase price per Acquiree Share | £		£ 4.80
Purchase price, cash consideration, net of cash acquired	$ 1,534
Debt assumed and repaid														$ 242
Net sales | €																€ 600
Costs associated with acquisitions															$ 23
Goodwill, Purchase Accounting Adjustments													$ 10
Debt and pension liabilities assumed	258
Total consideration transferred	1,792
Property, plant and equipment	326
Indefinite-lived intangible assets	128
Definite-lived intangible assets	554
Other assets purchased and liabilities assumed, net	(82)
Identifiable net assets acquired	926
Goodwill	866
Total purchase price allocation	1,792
Deposit for acquisition of HellermannTyton			$ 844	£ 540,000,000
HellermannTyton Group PLC | Customer-Related Intangible Assets
Business Acquisition [Line Items]
Definite-lived intangible assets	$ 451
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	13 years	13 years
HellermannTyton Group PLC | Technology-Based Intangible Assets
Business Acquisition [Line Items]
Definite-lived intangible assets	$ 103
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	13 years	13 years
HellermannTyton Group PLC | Trade names
Business Acquisition [Line Items]
Indefinite-lived intangible assets	$ 128
HellermannTyton Group PLC | Customer Concentration Risk | Total Net Sales | Delphi
Business Acquisition [Line Items]
Sales to Delphi, Percentage															6.00%	6.00%
Senior Notes | 2015 Senior Notes
Business Acquisition [Line Items]
Senior notes issued																	$ 1,300