Goodwill and Other Intangible Assets, net (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of intangibles	$ 38,000,000	$ 21,000,000	$ 21,000,000
Estimated future amortization, year 1	30,000,000
Estimated future amortization, year 2	30,000,000
Estimated future amortization, year 3	30,000,000
Estimated future amortization, year 4	30,000,000
Estimated future amortization, year 5	30,000,000
Goodwill impairment charges	111,000,000
Impairment of Intangible Assets (Excluding Goodwill)	44,000,000
Impairment charges		0	$ 0
Accumulated impairment losses related to goodwill and other intangible assets, net		$ 0
UST [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived trademarks	9,000,000,000
Middleton [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived trademarks	$ 2,600,000,000
Definite-Lived Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets amortization period, maximum, in years	25 years
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment charges	$ 54,000,000
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets amortization period, maximum, in years	25 years