Debt - Long-Term Debt and Short-Term Borrowings (Parenthetical) (Detail)	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Interest rate, stated rate	5.82%
Senior Notes, interest at 7.375%, maturing 2015 [Member]
Debt Instrument [Line Items]
Interest rate, stated rate	7.375%	7.375%
Senior Notes, interest at 6.75%, maturing 2018 [Member]
Debt Instrument [Line Items]
Interest rate, stated rate	6.75%	6.75%
Senior Notes, interest at 7.15%, maturing 2019 [Member]
Debt Instrument [Line Items]
Interest rate, stated rate	7.15%	7.15%
Senior Notes, interest at 3.125%, maturing 2023 [Member]
Debt Instrument [Line Items]
Interest rate, stated rate	3.125%	3.125%
Mortgages and other, interest rates ranging from 1.00% to 4.15%, various maturities [Member]
Debt Instrument [Line Items]
Minimum interest rate, stated percentage on revolving credit facilities	1.00%	1.00%
Maximum interest rate, stated percentage on revolving credit facilities	4.15%	4.15%