Derivative Financial Instruments - Summary of Outstanding Foreign Exchange Derivatives Designated as Net Investment Hedges of Foreign Currency Risk (Detail) - Designated Hedges - Net Investment Hedges € in Thousands, £ in Thousands, kr in Thousands, kr in Thousands, SFr in Thousands, $ in Thousands, $ in Thousands	Sep. 30, 2023 SEK (kr) derivative_instrument	Sep. 30, 2023 GBP (£) derivative_instrument	Sep. 30, 2023 EUR (€) derivative_instrument	Sep. 30, 2023 AUD ($) derivative_instrument	Sep. 30, 2023 DKK (kr) derivative_instrument	Sep. 30, 2023 CHF (SFr) derivative_instrument	Dec. 31, 2022 SEK (kr) derivative_instrument	Dec. 31, 2022 GBP (£) derivative_instrument	Dec. 31, 2022 EUR (€) derivative_instrument	Dec. 31, 2022 AUD ($) derivative_instrument	Dec. 31, 2022 DKK (kr) derivative_instrument	Dec. 31, 2022 CHF (SFr) derivative_instrument	Dec. 31, 2022 CAD ($) derivative_instrument
Buy USD / Sell SEK Forward
Derivative [Line Items]
Number of Instruments	2	2	2	2	2	2	2	2	2	2	2	2	2
Notional Amount | kr	kr 1,004,551						kr 1,003,626
Buy USD / Sell GBP Forward
Derivative [Line Items]
Number of Instruments	8	8	8	8	8	8	6	6	6	6	6	6	6
Notional Amount | £		£ 722,576						£ 690,912
Buy USD / Sell EUR Forward
Derivative [Line Items]
Number of Instruments	7	7	7	7	7	7	8	8	8	8	8	8	8
Notional Amount | €			€ 676,126						€ 722,311
Buy USD / Sell AUD Forward
Derivative [Line Items]
Number of Instruments	9	9	9	9	9	9	8	8	8	8	8	8	8
Notional Amount | $				$ 464,016						$ 541,813
Buy USD / Sell DKK Forward
Derivative [Line Items]
Number of Instruments	2	2	2	2	2	2	3	3	3	3	3	3	3
Notional Amount | kr					kr 195,728						kr 195,019
Buy USD / Sell CHF Forward
Derivative [Line Items]
Number of Instruments	3	3	3	3	3	3	2	2	2	2	2	2	2
Notional Amount | SFr						SFr 7,873						SFr 5,263
Buy USD / Sell CAD Forward
Derivative [Line Items]
Number of Instruments							2	2	2	2	2	2	2
Notional Amount | $													$ 22,187