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Stock Incentive Plans - CEO Performance Awards (Details) - CEO Long-Term Performance Award - Chief Executive Officer	9 Months Ended
	Sep. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	19,788,188
Tranche 1
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 67.50
Tranche 2
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 78.98
Tranche 3
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 92.40
Tranche 4
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 108.11
Tranche 5
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 126.49
Tranche 6
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 147.99
Tranche 7
Share-based Compensation Arrangement by Share-based Payment Award
Number of Options Eligible to Vest (in shares)	2,826,884
Company Stock Price Hurdle (in dollars per share) | $ / shares	$ 173.15

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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 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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