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Financing and Capital - Narrative (Details)																		1 Months Ended	3 Months Ended	9 Months Ended			20 Months Ended
Financing and Capital - Narrative (Details)	Dec. 31, 2021	Oct. 01, 2021	Jul. 02, 2021	Oct. 15, 2020 USD ($)	Oct. 14, 2020 USD ($)	Oct. 09, 2020 USD ($) $ / shares	Apr. 24, 2020 USD ($)	Apr. 23, 2020	Apr. 03, 2020 USD ($)	Mar. 23, 2020 USD ($)	Feb. 26, 2020 USD ($)	Nov. 08, 2019 USD ($)	Oct. 25, 2019 USD ($)	Mar. 20, 2019 USD ($)	Mar. 01, 2019 USD ($)	Feb. 22, 2019 USD ($) $ / shares	Feb. 19, 2019 $ / shares	Apr. 30, 2020 USD ($)	Sep. 25, 2020 USD ($)	Apr. 02, 2021	Sep. 25, 2020 USD ($)	Sep. 27, 2019 USD ($)	Dec. 31, 2021	Oct. 15, 2020 JPY (¥)	Sep. 25, 2020 JPY (¥)	Dec. 31, 2019 USD ($)	Mar. 29, 2019
Debt Instrument [Line Items]
Debt discounts, premiums and issuance costs																			$ 70,000,000		$ 70,000,000					$ 102,000,000
Share closing price (in dollars per share) \| $ / shares																	$ 80.48
Payments of debt issuance costs																					$ 8,000,000	$ 24,000,000
Subsequent Event \| Vontier
Debt Instrument [Line Items]
ftv_DiscontinuedOperationEquityInvestmentRetainedAfterDisposalOwnershipInterestAfterDisposal						19.90%
Line of credit
Debt Instrument [Line Items]
Required consolidated net leverage ratio								3.50													3.5
Required consolidated net leverage ratio following material acquisition																					4.0
Maximum percentage of principal amount of secured indebtedness to consolidated net assets								15.00%
Line of credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.00%
Line of credit \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate								1.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Debt term																					5 years
Long-term debt																			2,000,000,000.0		$ 2,000,000,000.0
Outstanding borrowings																			0		0
Revolving Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.00%
Revolving Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.175%
Revolving Credit Facility \| Eurodollar \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.805%
Revolving Credit Facility \| Eurodollar \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate								1.175%
Yen variable interest rate term loan due 2022
Debt Instrument [Line Items]
Long-term debt \| ¥																									¥ 13,800,000,000
Yen variable interest rate term loan due 2022 \| Subsequent Event
Debt Instrument [Line Items]
Long-term debt \| ¥																								¥ 13,800,000,000
Payment of outstanding principal				$ 131,000,000
Convertible Debt
Debt Instrument [Line Items]
Interest expense																			13,600,000		$ 40,600,000
Term Loan due 2021 \| Line of credit
Debt Instrument [Line Items]
Debt term																					364 days
Long-term debt										$ 425,000,000									750,000,000		$ 750,000,000
Outstanding borrowings																		$ 750,000,000	$ 750,000,000		$ 750,000,000
Basis spread on variable interest rate																					1.55%
Proceeds from line of credit										$ 375,000,000								$ 375,000,000
Increase in line of credit facility									$ 325,000,000
Interest rate at the end of the period																			1.80%		1.80%				1.80%
Payments of debt issuance costs																					$ 2,000,000.0
Term Loan due 2021 \| Line of credit \| Subsequent Event
Debt Instrument [Line Items]
Outstanding borrowings						$ 750,000,000
Payment of outstanding principal						350,000,000
Term Loan due 2020 \| Line of credit
Debt Instrument [Line Items]
Long-term debt													$ 300,000,000						$ 500,000,000		500,000,000
Outstanding borrowings												$ 500,000,000							$ 250,000,000		$ 250,000,000
Proceeds from line of credit													$ 300,000,000
Increase in line of credit facility												$ 200,000,000
Interest rate at the end of the period																			1.00%		1.00%				1.00%
Payment of outstanding principal											$ 250,000,000
Term Loan due 2020 \| Line of credit \| Subsequent Event
Debt Instrument [Line Items]
Payment of outstanding principal						$ 250,000,000
Term Loan due 2020 \| Line of credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable interest rate																					0.75%
Delayed-draw term loan due 2020 \| Line of credit
Debt Instrument [Line Items]
Long-term debt															$ 1,000,000,000.0				$ 1,000,000,000.0		$ 1,000,000,000.0
Outstanding borrowings																			$ 1,000,000,000.0		$ 1,000,000,000.0
Proceeds from line of credit														$ 1,000,000,000.0
Interest rate at the end of the period																			1.80%		1.80%				1.80%
Delayed-draw term loan due 2020 \| Line of credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable interest rate							1.55%								0.75%
The Amendments \| Line of credit
Debt Instrument [Line Items]
Debt issuance costs							$ 6,500,000
The Amendments \| Line of credit \| Forecast
Debt Instrument [Line Items]
Required consolidated net leverage ratio	3.75	4.25	4.5																	4.75
Maximum percentage of principal amount of secured indebtedness to consolidated net assets																							11.25%
The Amendments \| Line of credit \| London Interbank Offered Rate (LIBOR) \| Forecast
Debt Instrument [Line Items]
Basis spread on variable interest rate																							0.25%
The Amendments \| Line of credit \| Base Rate \| Forecast
Debt Instrument [Line Items]
Basis spread on variable interest rate																							1.25%
The Amendments \| Revolving Credit Facility \| Base Rate \| Forecast \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							0.18%
The Amendments \| Revolving Credit Facility \| Base Rate \| Forecast \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							0.55%
The Amendments \| Revolving Credit Facility \| Eurodollar \| Forecast \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							1.18%
The Amendments \| Revolving Credit Facility \| Eurodollar \| Forecast \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							1.55%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.00%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Base Rate \| Forecast \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							0.55%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Base Rate \| Forecast \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							0.80%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Eurodollar \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.75%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Eurodollar \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate								0.975%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Eurodollar \| Forecast \| Minimum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							1.55%
Delayed-Draw Term Loan Due 2020, Extended Tranche \| Revolving Credit Facility \| Eurodollar \| Forecast \| Maximum
Debt Instrument [Line Items]
Basis spread on variable interest rate																							1.80%
0.875% senior convertible notes due 2022 \| Convertible Debt
Debt Instrument [Line Items]
Debt issuance costs																$ 24,300,000
Proceeds from the issuance of convertible notes																$ 1,400,000,000
Interest rate, stated percentage																0.875%			0.875%		0.875%				0.875%		0.875%
Principal amount																$ 1,300,000,000
Conversion ratio																0.0093777
Initial conversion price (in dollars per share) \| $ / shares																$ 106.64
Threshold percentage of stock price trigger																	32.50%
Discount at issuance																$ 102,200,000
Effective interest rate																3.38%
Interest expense related to contractual coupon rate																			$ 3,200,000		$ 9,500,000
Amortization of debt issuance costs																			1,800,000		5,600,000
Unamortized discount																$ 102,200,000			$ 48,600,000		$ 48,600,000
Discount amortization period																					3 years
0.875% senior convertible notes due 2022 \| Convertible Debt \| Subsequent Event
Debt Instrument [Line Items]
Conversion ratio						0.0109568
Initial conversion price (in dollars per share) \| $ / shares						$ 91.27
Senior Unsecured Notes due 2022, Over-Allotment Option \| Convertible Debt
Debt Instrument [Line Items]
Principal amount																$ 187,500,000
2.35% senior unsecured notes due 2021 \| Senior Notes
Debt Instrument [Line Items]
Interest rate, stated percentage																			2.35%		2.35%				2.35%
2.35% senior unsecured notes due 2021 \| Senior Notes \| Subsequent Event
Debt Instrument [Line Items]
Outstanding borrowings					$ 750,000,000
Interest rate, stated percentage					2.35%
Redemption price, percentage of principal amount redeemable					100.00%
2.35% senior unsecured notes due 2021 \| Senior Notes \| US Treasury (UST) Interest Rate \| Subsequent Event
Debt Instrument [Line Items]
Basis spread on variable interest rate					0.20%