Credit and Other Debt Agreements - Summary of Corporate and Other Debt (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Premium Financing Debt Facility [Member]
Debt Instrument [Line Items]
Periodic payments of interest and principal, expiry date	Oct. 31, 2025	Oct. 31, 2025
Fixed Rate of 2.40%, Balloon Due November 9, 2031 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	2.40%	2.40%
Periodic payments of interest and principal, expiry date	Nov. 09, 2031	Nov. 09, 2031
Fixed Rate of 5.50%, Balloon Due March 2, 2033 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.50%	5.50%
Periodic payments of interest and principal, expiry date	Mar. 02, 2033	Mar. 02, 2033
Fixed Rate of 6.50%, Balloon due February 15, 2034 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	6.50%	6.50%
Periodic payments of interest and principal, expiry date	Feb. 15, 2034	Feb. 15, 2034
Fixed Rate of 5.45%, Balloon Due July 15, 2034 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.45%	5.45%
Periodic payments of interest and principal, expiry date	Jul. 15, 2034	Jul. 15, 2034
Fixed Rate of 3.50%, Balloon Due May 20, 2051 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.50%	3.50%
Periodic payments of interest and principal, expiry date	May 20, 2051	May 20, 2051
Fixed Rate of 3.05%, Balloon Due March 9, 2052 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.05%	3.05%
Periodic payments of interest and principal, expiry date	Mar. 09, 2052	Mar. 09, 2052
Fixed Rate of 6.75%, Balloon Due February 15, 2054 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	6.75%	6.75%
Periodic payments of interest and principal, expiry date	Feb. 15, 2054	Feb. 15, 2054
Fixed Rate of 5.75%, Balloon Due July 15, 2054 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.75%	5.75%
Periodic payments of interest and principal, expiry date	Jul. 15, 2054	Jul. 15, 2054
Fixed Rate of 5.75%, Balloon Due March 2, 2053 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.75%	5.75%
Periodic payments of interest and principal, expiry date	Mar. 02, 2053	Mar. 02, 2053
Fixed Rate of 4.72%, Balloon due February 13, 2024 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.72%	4.72%
Periodic payments of interest and principal, expiry date	Feb. 13, 2024	Feb. 13, 2024
Fixed Rate of 4.58%, Balloon Due February 27, 2024 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.58%	4.58%
Periodic payments of interest and principal, expiry date	Feb. 27, 2024	Feb. 27, 2024
Fixed Rate of 4.31%, Balloon Due June 24, 2025 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.31%	4.31%
Periodic payments of interest and principal, expiry date	Jun. 24, 2025	Jun. 24, 2025
Fixed Rate of 4.85%, Balloon due February 13, 2026 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.85%	4.85%
Periodic payments of interest and principal, expiry date	Feb. 13, 2026	Feb. 13, 2026
Fixed Rate of 4.73%, Balloon Due February 27, 2026 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.73%	4.73%
Periodic payments of interest and principal, expiry date	Feb. 27, 2026	Feb. 27, 2026
Fixed Rate of 4.40%, Balloon Due June 2, 2026 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.40%	4.40%
Periodic payments of interest and principal, expiry date	Jun. 02, 2026	Jun. 02, 2026
Fixed Rate of 4.36%, Balloon Due June 24, 2026 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.36%	4.36%
Periodic payments of interest and principal, expiry date	Jun. 24, 2026	Jun. 24, 2026
Fixed Rate of 3.75%, Balloon Due January 30, 2027 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.75%	3.75%
Periodic payments of interest and principal, expiry date	Jan. 30, 2027	Jan. 30, 2027
Fixed Rate of 4.09%, Balloon Due June 27, 2027 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.09%	4.09%
Periodic payments of interest and principal, expiry date	Jun. 27, 2027	Jun. 27, 2027
Fixed Rate of 4.09%, Balloon Due August 2, 2027 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.09%	4.09%
Periodic payments of interest and principal, expiry date	Aug. 02, 2027	Aug. 02, 2027
Fixed Rate of 4.14%, Balloon Due August 4, 2027 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.14%	4.14%
Periodic payments of interest and principal, expiry date	Aug. 04, 2027	Aug. 04, 2027
Fixed Rate of 3.46%, Balloon Due December 1, 2027 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.46%	3.46%
Periodic payments of interest and principal, expiry date	Dec. 01, 2027	Dec. 01, 2027
Fixed Rate of 4.55%, Balloon Due June 2, 2028 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.55%	4.55%
Periodic payments of interest and principal, expiry date	Jun. 02, 2028	Jun. 02, 2028
Fixed Rate of 4.34%, Balloon due June 13, 2028 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.34%	4.34%
Periodic payments of interest and principal, expiry date	Jun. 13, 2028	Jun. 13, 2028
Fixed Rate of 5.04%, Balloon due February 13, 2029 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.04%	5.04%
Periodic payments of interest and principal, expiry date	Feb. 13, 2029	Feb. 13, 2029
Fixed Rate of 4.98%, Balloon Due February 27, 2029 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.98%	4.98%
Periodic payments of interest and principal, expiry date	Feb. 27, 2029	Feb. 27, 2029
Fixed Rate of 4.19%, Balloon Due June 27, 2029 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.19%	4.19%
Periodic payments of interest and principal, expiry date	Jun. 27, 2029	Jun. 27, 2029
Fixed Rate of 4.19%, Balloon Due August 2, 2029 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.19%	4.19%
Periodic payments of interest and principal, expiry date	Aug. 02, 2029	Aug. 02, 2029
Fixed Rate of 3.48%, Balloon Due December 2, 2029 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.48%	3.48%
Periodic payments of interest and principal, expiry date	Dec. 02, 2029	Dec. 02, 2029
Fixed Rate of 3.99%, Balloon Due January 30, 2030 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	3.99%	3.99%
Periodic payments of interest and principal, expiry date	Jan. 30, 2030	Jan. 30, 2030
Fixed Rate of 4.44%, Balloon Due June 13, 2030 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.44%	4.44%
Periodic payments of interest and principal, expiry date	Jun. 13, 2030	Jun. 13, 2030
Fixed Rate of 5.14%, Balloon due March 13, 2031 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.14%	5.14%
Periodic payments of interest and principal, expiry date	Mar. 13, 2031	Mar. 13, 2031
Fixed Rate of 4.70%, Balloon Due June 2, 2031 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.70%	4.70%
Periodic payments of interest and principal, expiry date	Jun. 02, 2031	Jun. 02, 2031
Fixed Rate of 4.09%, Balloon Due January 30, 2032 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.09%	4.09%
Periodic payments of interest and principal, expiry date	Jan. 30, 2032	Jan. 30, 2032
Fixed Rate of 4.34%, Balloon Due June 27, 2032 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.34%	4.34%
Periodic payments of interest and principal, expiry date	Jun. 27, 2032	Jun. 27, 2032
Fixed Rate of 4.34%, Balloon Due August 2, 2032 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.34%	4.34%
Periodic payments of interest and principal, expiry date	Aug. 02, 2032	Aug. 02, 2032
Fixed Rate of 4.59%, Balloon due June 13, 2033 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.59%	4.59%
Periodic payments of interest and principal, expiry date	Jun. 13, 2033	Jun. 13, 2033
Fixed Rate of 5.29%, balloon due March 13, 2034 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.29%	5.29%
Periodic payments of interest and principal, expiry date	Mar. 13, 2034	Mar. 13, 2034
Fixed Rate of 4.48%, Balloon Due June 12, 2034 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.48%	4.48%
Periodic payments of interest and principal, expiry date	Jun. 12, 2034	Jun. 12, 2034
Fixed Rate of 4.24%, Balloon Due January 30, 2035 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.24%	4.24%
Periodic payments of interest and principal, expiry date	Jan. 30, 2035	Jan. 30, 2035
Fixed Rate of 2.44%, Balloon Due February 10, 2036 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	2.44%	2.44%
Periodic payments of interest and principal, expiry date	Feb. 10, 2036	Feb. 10, 2036
Fixed Rate of 2.46%, Balloon Due May 5, 2036 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	2.46%	2.46%
Periodic payments of interest and principal, expiry date	May 05, 2036	May 05, 2036
Fixed Rate of 4.69%, Balloon Due June 13, 2038 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.69%	4.69%
Periodic payments of interest and principal, expiry date	Jun. 13, 2038	Jun. 13, 2038
Fixed Rate of 5.45%, balloon due March 13, 2039 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	5.45%	5.45%
Periodic payments of interest and principal, expiry date	Mar. 13, 2039	Mar. 13, 2039
Fixed Rate of 4.49%, Balloon Due January 30, 2040 [Member]
Debt Instrument [Line Items]
Periodic payment of interest	4.49%	4.49%
Periodic payments of interest and principal, expiry date	Jan. 30, 2040	Jan. 30, 2040
Prime or SOFR Plus up to 1.075%, Expires June 22, 2028 [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Periodic payment of interest	1.075%	1.075%
Periodic payments of interest and principal, expiry date	Jun. 22, 2028	Jun. 22, 2028
Facility B [Member] \| Interbank rates plus 1.500% Expires October 31, 2025 [Member] \| Premium Financing Debt Facility [Member] \| AUD Denominated Tranche [Member]
Debt Instrument [Line Items]
Periodic payment of interest	1.50%	1.50%
Facility B [Member] \| Interbank Rates Plus 1.850% Expires October 31, 2025 [Member] \| Premium Financing Debt Facility [Member] \| NZD Denominated Tranche [Member]
Debt Instrument [Line Items]
Periodic payment of interest	1.85%	1.85%
Facility C and D [Member] \| Interbank Rates Plus 0.830% Expires October 31, 2025 [Member] \| Premium Financing Debt Facility [Member] \| AUD Denominated Tranche [Member]
Debt Instrument [Line Items]
Periodic payment of interest	0.83%	0.83%
Facility C and D [Member] \| Interbank Rates Plus 0.990% Expires October 31, 2025 [Member] \| Premium Financing Debt Facility [Member] \| NZD Denominated Tranche [Member]
Debt Instrument [Line Items]
Periodic payment of interest	0.99%	0.99%