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Pension and Other Postretirement Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2021

Pension Plans

Defined Benefit Plan Disclosure [Line Items]

Components of net cost of defined benefit plans

The Company has defined benefit pension plans covering eligible employees in the United States and in certain of its international subsidiaries. The net periodic benefit cost of such plans consisted of the following components: 

			Three Months Ended March 31,
			2021												2020
($ in millions)			U.S.						International						U.S.						International
Service cost			$	100					$	93					$	86					$	74
Interest cost			96						29						109						34
Expected return on plan assets			(188)						(104)						(194)						(103)
Amortization of unrecognized prior service credit			(10)						(4)						(12)						(3)
Net loss amortization			85						41						75						31
Termination benefits			1						—						3						1
Curtailments			7						—						2						(1)
			$	91					$	55					$	69					$	33

Other Postretirement Benefit Plans

Defined Benefit Plan Disclosure [Line Items]

Components of net cost of defined benefit plans

The Company provides medical benefits, principally to its eligible U.S. retirees and similar benefits to their dependents, through its other postretirement benefit plans. The net credit of such plans consisted of the following components: 

			Three Months Ended March 31,
($ in millions)			2021						2020
Service cost			$	13					$	13
Interest cost			11						14
Expected return on plan assets			(20)						(19)
Amortization of unrecognized prior service credit			(25)						(22)
			$	(21)					$	(14)

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

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