Accounts Receivable Factoring and Securitization (Details) € in Millions, $ in Millions		3 Months Ended
	Oct. 04, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2018 EUR (€)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 EUR (€)	Sep. 30, 2018 USD ($)
Accounts Receivable Factoring And Securitization [Line Items]
Costs associated with off balance sheet factoring arrangements		$ 1	$ 2
Swedish Factoring Facility
Accounts Receivable Factoring And Securitization [Line Items]
Maximum limit for sale of eligible trade receivables				€ 155	$ 177
Utilization of accounts receivable factoring facility under arrangement				158	181	€ 136	$ 158
Liquidity commitment		364 days
U.S Factoring Facility
Accounts Receivable Factoring And Securitization [Line Items]
Maximum limit for sale of eligible trade receivables				80	92
Utilization of accounts receivable factoring facility under arrangement				53	61	45	53
United Kingdom Factoring Facility
Accounts Receivable Factoring And Securitization [Line Items]
Maximum limit for sale of eligible trade receivables				25	29
Utilization of accounts receivable factoring facility under arrangement				9	11	8	9
Italy Factoring Facility
Accounts Receivable Factoring And Securitization [Line Items]
Maximum limit for sale of eligible trade receivables				30	34
Utilization of accounts receivable factoring facility under arrangement				€ 23	27	€ 24	28
Other Factoring Facility
Accounts Receivable Factoring And Securitization [Line Items]
Utilization of accounts receivable factoring facility under arrangement					14		12
U.S. Securitization Financing Facility
Accounts Receivable Factoring And Securitization [Line Items]
Maximum limit for securitization financing arrangement	$ 110
Debt-to-EBITDA ratio	2.25
Outstanding balance under accounts receivable securitization program					79		46
U.S. Securitization Financing Facility | Letter of Credit
Accounts Receivable Factoring And Securitization [Line Items]
Letters of credit outstanding					$ 11		$ 11