Notes Payable, Other and Short-Term Borrowings - Carrying Amounts and Estimated Fair Values of Company's Senior Notes (Parenthetical) (Detail)	Dec. 31, 2019	Sep. 27, 2019	Dec. 31, 2018	Jul. 24, 2018
8.125% Senior Notes Due 2042 [Member]
Debt Instrument [Line Items]
Stated interest rate	8.125%		8.125%
5.375% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	5.375%		5.375%
8.375% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	8.375%		8.375%
5.125% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	5.125%		5.125%
5.375% Senior Notes Due 2023 [Member]
Debt Instrument [Line Items]
Stated interest rate	5.375%		5.375%	5.375%
3.750% Senior Notes [Member]
Debt Instrument [Line Items]
Stated interest rate	3.75%	3.75%	3.75%