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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Line Items]
Amortization of intangible assets	$ 88	$ 62	$ 59
Annual estimated amortization expense, year 1	83
Annual estimated amortization expense, year 2	83
Annual estimated amortization expense, year 3	83
Annual estimated amortization expense, year 4	83
Annual estimated amortization expense, year 5	$ 83
Filorga Reporting Unit
Goodwill [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount	10.00%
Reporting unit, impairment analysis, projected reduction in fair value, percentage	5.00%
Filorga Reporting Unit | Indefinite life intangible assets
Goodwill [Line Items]
Indefinite-lived intangible assets, percentage of fair value in excess of carrying amount	10.00%
Filorga Reporting Unit | Scenario One
Goodwill [Line Items]
Reporting unit, impairment analysis, reduction in long-term growth rate, percentage	0.50%
Filorga Reporting Unit | Scenario One | Indefinite life intangible assets
Goodwill [Line Items]
Reporting unit, impairment analysis, reduction in long-term growth rate, percentage	0.50%
Filorga Reporting Unit | Scenario Two
Goodwill [Line Items]
Reporting unit, impairment analysis, increase in discount rate, percentage	0.25%
Filorga Reporting Unit | Scenario Two | Indefinite life intangible assets
Goodwill [Line Items]
Reporting unit, impairment analysis, increase in discount rate, percentage	0.25%
Reporting Units Other Than Filorga
Goodwill [Line Items]
Indefinite-lived intangible assets, percentage of fair value in excess of carrying amount	20.00%

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Indefinite-Lived Intangible Assets, Percentage Of Fair Value In Excess Of Carrying Amount

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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