Segment Reporting (Schedule for Lump Sum Pension Payments) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning	$ 206	$ 19	$ (359)	$ 103	$ (13,785)	$ 786	$ (86)	$ 304
Pension [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									$ 81
Pension [Member] | Smokeable Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									57
Pension [Member] | Smokeless Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									16
Pension [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									8
Pension [Member] | Cost of Sales [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									39
Pension [Member] | Cost of Sales [Member] | Smokeable Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									39
Pension [Member] | Cost of Sales [Member] | Smokeless Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									0
Pension [Member] | Cost of Sales [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									0
Pension [Member] | Marketing, Adminstration and Research Costs [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									42
Pension [Member] | Marketing, Adminstration and Research Costs [Member] | Smokeable Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									18
Pension [Member] | Marketing, Adminstration and Research Costs [Member] | Smokeless Products [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									16
Pension [Member] | Marketing, Adminstration and Research Costs [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Pre-Tax Charges (Gain) Included in Net Earning									$ 8