Restructuring Restructuring (Tables)

12 Months Ended

Dec. 31, 2019

Organizational restructuring

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Costs

The summary below presents Organizational Restructuring expenses, pre-tax, by type of costs incurred, for the periods indicated:

	Years Ended December 31,						Cumulative Amounts Incurred to Date
	2019		2018		2017
Severance benefits	$	39	$	15	$	4	$	58
Organizational transition costs	162		40		—		202
Total restructuring expenses	$	201	$	55	$	4	$	260

Schedule of Restructuring Reserve by Type of Cost

The following table presents the accrued liability associated with Organizational Restructuring expenses as of December 31, 2019:

	Severance Benefits			Organizational Transition Costs			Total
Accrued liability as of January 1, 2019	$	12		$	9		$	21
Provision	39			162			201
Payments	(21		)	(146		)	(167		)
Accrued liability as of December 31, 2019	$	30		$	25		$	55

2016 Restructuring

Restructuring Cost and Reserve [Line Items]

Restructuring and Related Costs

The summary below presents 2016 Restructuring expense, pre-tax, by type of costs incurred, for the periods indicated:

	Years Ended December 31,						Cumulative Amounts Incurred to Date(1)
	2019		2018		2017
Severance benefits	$	—	$	9	$	34	$	69
Asset write-off costs	—		1		16		17
Transition costs	—		7		17		24
Other costs	8		13		15		44
Total restructuring expenses	$	8	$	30	$	82	$	154

Schedule of Restructuring Reserve by Type of Cost

The following table presents the accrued liability associated with 2016 Restructuring expenses as of December 31, 2019:

	Severance Benefits			Transition Costs			Other Costs			Total
Accrued liability as of January 1, 2019	$	8		$	14		$	2		$	24
Provision	—			—			8			8
Payments	(4		)	(6		)	(10		)	(20		)
Accrued liability as of December 31, 2019	$	4		$	8		$	—		$	12