Debt - Schedule of Debt and Capital Lease Obligations (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt instrument, interest rate	4.70%
4.7% senior notes due 2025
Debt Instrument [Line Items]
Debt instrument, interest rate	4.70%	4.70%
Debt instrument, maturity year	2025	2025
Senior unsecured credit facility - due 2021
Debt Instrument [Line Items]
Debt instrument, maturity year	2021