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LONG-TERM DEBT AND LINES OF CREDIT - Narrative (Details)		12 Months Ended			50 Months Ended
	May 15, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2021	Nov. 22, 2021 USD ($)	Sep. 30, 2021	Feb. 26, 2021 USD ($)	Sep. 18, 2019 USD ($)	Aug. 14, 2019 USD ($)	Jun. 30, 2019 USD ($)
Debt Instrument [Line Items]
Amortization of discounts, premiums, and deferred debt issuance costs		$ 14,400,000	$ 12,000,000	$ 11,900,000
Proceeds from long-term debt		7,057,668,000	2,401,147,000	7,203,903,000
Long-term debt		11,408,600,000
Interest expense		328,000,000	326,800,000	301,200,000
Senior Notes
Debt Instrument [Line Items]
Unamortized discount		11,700,000	8,500,000
Long-term debt		9,400,000,000
Fair value of debt instrument		9,800,000,000
Senior Notes | Total System Services, Inc.
Debt Instrument [Line Items]
Amortization of discounts, premiums, and deferred debt issuance costs		29,600,000	36,200,000
Senior Notes | Senior Unsecured Notes
Debt Instrument [Line Items]
Face amount of debt instrument		$ 9,400,000,000				$ 2,000,000,000				$ 3,000,000,000
Capitalized debt issuance costs						14,400,000
Senior Notes | Senior Unsecured Notes | Total System Services, Inc.
Debt Instrument [Line Items]
Face amount of debt instrument									$ 3,000,000,000
Senior Notes | 1.500% senior notes due November 15, 2024
Debt Instrument [Line Items]
Face amount of debt instrument						$ 500,000,000
Stated interest rate (as a percent)		1.50%				1.50%
Gross long-term debt		$ 497,185,000	0
Senior Notes | 2.150% senior notes due January 15, 2027
Debt Instrument [Line Items]
Face amount of debt instrument						$ 750,000,000
Stated interest rate (as a percent)		2.15%				2.15%
Gross long-term debt		$ 743,695,000	0
Senior Notes | 2.900% senior notes due November 15, 2031
Debt Instrument [Line Items]
Face amount of debt instrument						$ 750,000,000
Stated interest rate (as a percent)		2.90%				2.90%
Gross long-term debt		$ 741,716,000	0
Senior Notes | 1.200% senior notes due March 1, 2026
Debt Instrument [Line Items]
Face amount of debt instrument								$ 1,100,000,000
Stated interest rate (as a percent)		1.20%						1.20%
Capitalized debt issuance costs								$ 8,600,000
Gross long-term debt		$ 1,092,016,000	0
Senior Notes | 3.800% senior notes due April 1, 2021
Debt Instrument [Line Items]
Face amount of debt instrument									$ 750,000,000
Stated interest rate (as a percent)		3.80%						3.80%	3.80%
Gross long-term debt		$ 0	752,199,000
Senior Notes | 2.900% senior notes due May 15, 2030
Debt Instrument [Line Items]
Face amount of debt instrument	$ 1,000,000,000
Stated interest rate (as a percent)	2.90%	2.90%
Proceeds from long-term debt	$ 996,700,000
Capitalized debt issuance costs	$ 8,400,000
Gross long-term debt		$ 990,196,000	989,025,000
Senior Notes | 2.650% senior notes due February 15, 2025
Debt Instrument [Line Items]
Face amount of debt instrument										$ 1,000,000,000
Stated interest rate (as a percent)		2.65%								2.65%
Gross long-term debt		$ 994,797,000	993,110,000
Senior Notes | 3.200% senior notes due August 15, 2029
Debt Instrument [Line Items]
Face amount of debt instrument										$ 1,250,000,000
Stated interest rate (as a percent)		3.20%								3.20%
Gross long-term debt		$ 1,238,006,000	1,236,424,000
Senior Notes | 4.150% senior notes due August 15, 2049
Debt Instrument [Line Items]
Face amount of debt instrument										$ 750,000,000
Stated interest rate (as a percent)		4.15%								4.15%
Gross long-term debt		$ 740,146,000	739,789,000
Senior Notes | 3.750% senior notes due June 1, 2023
Debt Instrument [Line Items]
Face amount of debt instrument									$ 550,000,000
Stated interest rate (as a percent)		3.75%							3.75%
Gross long-term debt		$ 557,186,000	562,258,000
Senior Notes | 4.000% senior notes due June 1, 2023
Debt Instrument [Line Items]
Face amount of debt instrument									$ 550,000,000
Stated interest rate (as a percent)		4.00%							4.00%
Gross long-term debt		$ 559,338,000	565,930,000
Senior Notes | 4.800% senior notes due April 1, 2026
Debt Instrument [Line Items]
Face amount of debt instrument									$ 750,000,000
Stated interest rate (as a percent)		4.80%							4.80%
Gross long-term debt		$ 798,024,000	809,324,000
Senior Notes | 4.450% senior notes due June 1, 2028
Debt Instrument [Line Items]
Face amount of debt instrument									$ 450,000,000
Stated interest rate (as a percent)		4.45%							4.45%
Gross long-term debt		$ 478,194,000	482,588,000
Senior Notes and Secured Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs		60,700,000
Secured Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs			47,400,000
Secured Debt | Term Loan A
Debt Instrument [Line Items]
Rate of quarterly installment payments (as a percent)					2.50%
Secured Debt | Term Loan B-2
Debt Instrument [Line Items]
Unamortized discount										$ 6,100,000
Capitalized debt issuance costs										$ 29,600,000
Unsecured Debt | Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Unamortized debt issuance costs		9,900,000
Line of Credit
Debt Instrument [Line Items]
Unamortized debt issuance costs			13,800,000
Unsecured term loan facility
Debt Instrument [Line Items]
Gross long-term debt		1,989,793,000	1,985,776,000
Forward-Starting Interest Rate Swap
Debt Instrument [Line Items]
Derivative settlement payments				$ 48,300,000
Forward-Starting Interest Rate Swap | Accounts payable & accrued liabilities
Debt Instrument [Line Items]
Notional amount											$ 1,000,000,000
Interest Rate Swap
Debt Instrument [Line Items]
Reclassification of net unrealized losses (gains) on hedging activities to interest expense		34,200,000
Interest Rate Swap | Accounts payable & accrued liabilities
Debt Instrument [Line Items]
Notional amount		1,250,000,000	300,000,000
Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		1,267,400,000
Available borrowings under credit facility		1,693,200,000
Repayments of lines of credit		76,300,000	$ 64,500,000
Amount outstanding under lines of credit		484,200,000
Average outstanding balance		$ 487,700,000
Weighted-average interest rate of short-term debt (as a percent)		2.22%
Term Loan Facility | Unsecured Debt
Debt Instrument [Line Items]
Effective interest rate (as a percent)		1.48%
Term Loan Facility | Unsecured Debt | Five Year Senior Unsecured Credit Facility
Debt Instrument [Line Items]
Face amount of debt instrument		$ 2,000,000,000
Revolving Credit Facility | Fourth Amendment
Debt Instrument [Line Items]
Minimum leverage ratio		3.50
Minimum interest coverage ratio							3.00
Revolving Credit Facility | Unsecured Debt | Five Year Senior Unsecured Credit Facility
Debt Instrument [Line Items]
Face amount of debt instrument		$ 3,000,000,000
Capitalized debt issuance costs		12,800,000
Letter of Credit | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		250,000,000
Standby Letters of Credit | Line of Credit
Debt Instrument [Line Items]
Available borrowings under credit facility		$ 1,900,000,000
Minimum | Revolving Credit Facility | Fourth Amendment
Debt Instrument [Line Items]
Commitment fee (as a percent)		0.125%
Maximum | Revolving Credit Facility | Fourth Amendment
Debt Instrument [Line Items]
Commitment fee (as a percent)		0.30%
Fed Funds Effective Rate Overnight Index Swap Rate | Term Loan Facility | Unsecured Debt | Five Year Senior Unsecured Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		0.50%
London Interbank Offered Rate (LIBOR) | Term Loan Facility | Unsecured Debt | Five Year Senior Unsecured Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)		1.00%

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