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Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

The following table summarizes stock option activity for the year ended December 31, 2021 (in millions except for per share amounts):

			Options						Weighted Average Exercise Price						Weighted Average Remaining Contractual Term (Years)						Aggregate Intrinsic Value
Balance, December 31, 2020			8						$	88.01					3.8						$	464
Granted			2						142.92
Exercised			(2)						72.67												$	107
Cancelled			—						126.64
Balance, December 31, 2021			8						$	99.32					3.6						$	143
Options exercisable at December 31, 2021			6						$	84.91					2.6						$	142

Schedule of Stock Option Valuation Assumptions

The weighted average fair value of options granted during the years ended December 31, 2021, 2020 and 2019, was $29.01, $21.17 and $19.25, respectively, using the Black-Scholes option pricing model with the assumptions below:

			2021						2020						2019
Risk free interest rate			0.6		%				0.4		%				2.2		%
Volatility			27.6		%				24.7		%				20.1		%
Dividend yield			1.1		%				1.2		%				1.2		%
Weighted average expected life (years)			4.1						4.1						4.1

Schedule of Restricted Stock Unit, Activity

The following table summarizes the restricted stock units activity for the year ended December 31, 2021 (in millions except for per share amounts):

						Quantity						Weighted Average Fair Value
Balance December 31, 2020						5						$	127.63
Granted						2						$	136.69
Vested						(2)						$	127.19
Forfeited						—						$	126.34
Balance December 31, 2021						5						$	132.60

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Tabular disclosure of share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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